Little Johnny was walking down the street with a cigarette in his mouth when some guy said too him:
"Hey!, you are way too young to smoke, how old are you?"
Johnny replied "I'm seven!"
The bloke asked "And when did you start smoking?"
Johnny responded "Right after the first time I got laid!"
"Good lord!" said the man... "And how long ago was that?"
Johnny scratched his head, "I dunno, I was too drunk to remember!"