You're SO immature!
Response by girls to absolutely anything a boy says or does that is in anyway funny, interesting or unorthodox. My answer was that I was releasing my inner child, which was in fact a very mature thing to do indeed.
written by Ro*s Gil*son, approved by Conor
A good reply to this is to say 'Yeah, but only mentally' while leering at them, thus suggesting that while your internal world may be juvenile and squishy, your physical development was easily advanced enough to assume the very grown up role of sexual predator.
written by Ga*y La*ont, approved by Jamie