honestly, the devil can suck it
ok i have an idea and would like to know if ots a good one. ok so say me and my dad are in the car together. the car radio is on a low.volume so out of nowheres i choose a good enough song like sometjing from as i lay dying and “accidentally” play it then talk to him about it.
This is what popped into my head :D.
Dude your dad probably won’t like As I Lay Dying even if he was a metalhead when he was younger. You really need to start with something somewhat milder like Metallica or Megadeth or even AC/DC.
You sound like a great kid and the very fact that you are so concerned about your parents liking you and accepting you and wanting them to approve of you and the music you listen to is a great sign. I don’t think there’s anything wrong with keeping it to yourself though. Keep a positive attitude in life, and listen to whatever you want to listen to.
Keep an open and honest line of communication between you and your parents, but also remember that your parents are only human beings too, and they have their own biases, histories, and experiences, and may never be able to see eye to eye with you on the issue of metal. And that’s ok, as long as they know you love them, and that you know that they love you, it’s all going to be ok.
But pick your battles with your parents. Be as mature and level headed as possible when trying to convince them of something they disagree with, but also keep in mind the things that they tell you because they do have a lot more experience and life lessons behind them than you do as well.
It really does sound like it’s super important to you for your parents to accept the fact that you listen to metal, and that you must feel somewhat guilty about it or maybe you feel like you are lying by omission or something by not telling them, I’m not sure. So, do in your heart what you think is right. If you really feel it is important to tell your parents what you are listening to, then do so. But remember that you will have to suffer any consequences as well.
One thing in life you will learn is that sometimes it is better to ask for forgiveness than to ask for permission. It’s sad but true.
Good luck to you. 
I’m just going to repeat what I already told you over in the other thread:
Obviously you don’t want to expose your parents to the worst/filthiest/sickest tidbits in your collection right off the bat. (So keep your Anal Cunt boxset well-hidden, for now.)
Show ‘em something like Iron Maiden. Black Sabbath. The Scorpions. Guns ‘n’ Roses. Metallica. Some big, “safe” band that people of your parents’ generation can (presumably?) relate to. Then you can go on from there, explaining that, hey, guess what, there are newer bands which more or less continue in that tradition, ahem ahem, cough cough, and that’s something you’ve been listening to a lot lately.
Also, you do NOT want to introduce your parents to Christian metal, because it allows them to say that only Christian metal is allowed… In which case you’d miss out on a LOT of excellent metal. 
(The only good Christian metal in my book is Reverorum ib Malacht, and even that is a borderline case - much of the best material was supposedly written before Emil’s conversion to Catholicism.)
Whereas if you manage to convince your parents that metal music is merely harmless entertainment, then the religious affiliations of the musicians doesn’t matter. It’s just entertainment anyway, you know. That’s the main point.
And, again: The wisest move might be to compare metal to something you are allowed to do/see/have. Like, say, “it’s like that Lord Of The Rings movie we saw. Same thing but, like, a record instead of a movie.” Taking it down to the level of harmless entertainment.
The car thing might work too, though! Let us know what happens.
Parents are not supposed to like their kid’s music. It’s the circle of life. Keep your grades up, stay out of trouble, and they’ll be relieved that your teen rebellion is limited to music they don’t like.
But always remember “…when it comes down to making out, whenever possible put on Side 1 of Led Zeppelin IV.”
It’s easy: surf the net. Look for the most gruesome, heaviest metal you can find. Make them listen to Autopsy, show them some German grindcore, go old school and search for old Marilyn Manson videos, whatever, give them some metal magazines so they can look at your new role models.
The show them anything by Miley Cyrus.
Look them in the eyes and say: “choose”.
Also, it’s 2013.
Dude, no. Cowboy Junkies: The Trinity Sessions. Trust me on this one.
As for your first paragraph? Allow me to quote noted suburban philosopher Al Yankovic:
MetalMaster, you seem like an all right guy. But I speak as a parent of a 13-year-old when I say I would never encourage you to hide things from your parents. All that does is set up later confrontations and build a habit of not sharing with them.
They may disagree with your choice of music, sure. God knows mine did (The Freddie Mercury mustache and makeup were a bit of a shock to my good ol’ boy father)(It was the 80s. Don’t judge.). Still, if you just live your life they’ll discover who you are - and you will discover further who you are. No one is EVER done with that process of discovery because people change every day. That’s part of what’s good about life. No one has to be anything forever.
As for my dad? After his initial dismay he came back with, “Son, you look silly. But if you’re going to wear those clothes and keep your hair long, all I ask is that you keep both clean.”
Then he showed me pictures of himself with an Elvis pompadour.
And if you get in a wreck, don’t worry, my dad owns a TV repair shop.
haha not bloody likely (NSFW language)
I’m 46 years old and I still bang my head, no signs of slowing down or stopping. I’ll be mellow when I’m dead.*
*thanks Al!
See, this is where he’s got it so much easier than some of us did. Because, like, what’s an album cover?
I’m gonna recommend what worked so well for me. Hide nothing, volunteer nothing. When asked, respond confidently without shame, guilt, apology or issue. Just no big deal, right? And go listen to Pallbearer. I cannot play that enough times right now.
If we only had listened to Tipper Gore.
We tried, remember? She couldn’t shred at all.
I’m reminded of that really great scene in Lost when Jack is trying to bond with his teenage son, who seems to not want much bonding. His son has his earphone in, and Jack asks, in a sincere, father-as-buddy type way: What are you listening too? Son: You never heard of them.
Ziiiiiiiing!!!
One other thing to keep in mind. At your age, you might be wanting to shock your parents a little bit. Maybe subconsciously, but it’s still a distinct possibility. Resist that urge, if you can. In a few years, it’s not going to matter.
You doubt the words of Mike Damone?
Relax. I grew up in a Catholic family, went to church every Sunday and played in a heavy metal band for 7 years. Guess which house our practice started in? Yep, mine.
Your a kid, you like metal, I’m sure there’s other music you like too. Metal is fine, as long as you understand that every lead singer in all music (even the xtian kind) are NOT telling you how to be, they’re just expressing themselves.
Here’s what I’d do. Ask your parents who Ozzy Osbourne and Black Sabbath are. Bet they’ll whip out some albums.
Seconded.
Just mention it in passing. Maybe when they’re driving and you don’t have to make eye contact.