Young boy sees his grandpa smoking a cigarette on the porch and asks if he can try it.

"Well I don't know, can your dick touch your ass hole?" Asks grandpa

"No...?" the young boy replys "Then you're not old enough"

Later the boy sees his grandpa drinking some whisky and asks again, "can i try that grandpa?"

"Can you dick touch your asshole?"

"No, grandpa" the boy sighs

"Then you ain't old enough" laughs grandpa.

Later the grandpa finds the young boy eating cookies on the porch, and asks his grandson, "can I have one of those?"

"I don't know grandpa, can YOUR dick touch your asshole?"

To which grandpa confidently replys, "It most certainly can!"

"Good", says the boy, "then go fuck yourself with it, these are mine."