He says, “Gramps, can I have a puff?” Grandpa replies, “Can your dick touch your asshole?”
“No…”
“Well, you can’t have any.”
Later, the little boy sees his Grandpa drinking beer and asks, “Can I have a swig?” Grandpa replies again, “Can your dick touch your asshole?”
“No…”
“Well, you can’t have any.”
The boy goes into the kitchen and is eating cookies when his Grandpa walks in.
“Can I have a cookie?” asks Grandpa.
“Can your dick touch your asshole?”
Grandpa says, “As a matter of fact, it can!”
The little boy replies, “Well then, you can go fuck yourself. These are MY cookies.”