In my case, it’s because I am almost 48. I hate the number 47 and can’t wait to be done with it so I would round up.
What? When the shit did this happen?
Anyways my standard answer to these terrorist interrogations is, “Old enough to masturbate in public.”
And Chinese
Ask which planet they are from, and send them to this websiteand let them figure it out for themselves.
Regards,
Shodan
Who is 425 in dog years
If someone asks how big is a stud and how old are you, you can either say “Studs are 2 by 4 and I am 48” or you can say “Studs are 1.5 by 3.5 and I am 48.9.”
Why, I’d tell them my height and age, of course.
“A couple hundred years at least. Hard to remember exactly…I think it was 1815 when I signed that contract with Satan.”
I just say “I’m old enough to act as immature as I want.”
Any age I am currently unless my birthday is a week away. I’ll be 30 in December and now I say I am 29.
My birthday is next week: when the request is straightforward so is the answer (“44”), but for the past month or so in more casual/friendly conversation I’ve been saying “almost 45.”
Most people think I’m ~30, so it’s fun to say the higher number. But it’s a fair bet that my age won’t come up at all next week. 
Either “I’m 48” or “I’ll be 49 in September”. This isn’t rocket surgery.