I don’t fear these kinds of questions at all. I just tailor my response to make it appropriate to the age of the kid who’s asking. I’ve always told my kids that they can ask me anything at all, and if I don’t know the answer, I’ll find out, or help them find out.
Exactly. My son learned it the other way 'round. When he informed me (in a shrill piping voice in the middle of the grocery store), “Mommy, sometimes my penis gets really big!” I started walking a little faster and leaned over and said, “Yep, that’s called an erection. But we don’t talk about it in the store, okay? We’ll about it talk later if you want to.”
I’d tell them it was spam, just like in their email. And that like diet and political ads, they’re lying and trying to steal your money.
That, I feel, is a far more important message than explaining the birds and bees.
What’s a pee-pee parade?
Okay okay, I added that line for humorous effect, don’t take it too literally, ok? Sure nothing to be ashamed about re: the human body, I was just thinking of the stereotypical handwringing parents who aren’t ready to talk to their kids about the facts of life.
It’s when a bunch of kids express a need to go the bathroom at very close intervals.
Cialis is FDA approved, with all the clinical trials that entails.
B’sides, you’re just bitter because your username makes people think of Enzyte Bob, the Optimist! 
You don’t. You wait until they’re adults, and then leave a BIG SAMPLE BOX OF CIALIS on the kitchen counter when your 30-year-old son is dropping off his infant for an afternoon with Grandma and Grandpa, right within your son’s line of sight, and wait for him turn bright red and leave the house, at which point, he asks his wife to scrub out his eyes with bleach when they get in the car.
Yes, this just happened several weeks ago. Even worse, this past weekend, when we took the baby over for some grandparent-time, we discovered a PRESCRIPTION for Cialis sitting on the counter.
My poor husband is scarred for life.
E.
I doubt they’ll be posting to a thread like this on a board like this. Go to the mothering boards for a whole new idea of what the world is like. 
My son is 8. I don’t know if he’s noticed any of these ads, but I would start with, “oh, it’s something for grown men’s penises.” in reference to the medication. Then I would say, “it’s something to do with sex.” if there was further questioning. If he required more clarification I would say “the penis has to get hard and go up for sex.” At this age and with this child, I doubt we’d even get past question one. I think he may have seen the one for the non-approved “supplement” and asked basically what was going on and I told him the couple were “going off to have romantic encounter” which was totally enough for him.
You may all borrow “going off to have romantic encounter” if you wish. I personally think it’s brilliant.
On one of the albums by the political song humor group The Capitol Steps they have a sonf commenting on the 2000 election here in the US. At the end, a voice announces:
“If election persists more than 72 hours, contact a Supreme Court Justice.”
When I was in college and the whole Clinton impeachment thing was going on, I remember we asked our Latin prof, who had two small boys, what he told them about the constant news coverage. He said they understood that “he lied”, which was supposed to be the whole point anyway, right? And that they hadn’t really asked many questions about cigars or blowjobs.