"Grandfather & Grandson fishing" joke
One day, this young boy and his Grandfather were fishing in a boat out on a lake. The Grandfather pulls out a beer from his cooler and starts drinking it. The boy asks "Grandpa, can I have one of those?" Grandpa replies, "When your willie's long enough to touch your ass, then you'll be old enough and I will give you one."
A little later the Grandfather pulls out a long cigar. The boy asks "Grandpa, can I have one of those?" He replies " If your willie can touch your ass, then you can have one."
Later that day the boy pulls out a snack pack and starts eating it. The Grandfather asks, "Grandson, can I get one of those?"
The boy asks, "Can your willie touch your ass?"
The Grandfather says "Yes it can."
The boy says, "Then go screw yourself."
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