[NSFW] Granddad and Grandson are out fishing

Granddad and Grandson are out fishing. Granddad reaches into his overall bib pocket and pulls out a pack of cigarettes.
Grandson looks on and says "Granddad, can I have one?"
Granddad taken back by the question fumbles for a response and asks "we'll grandson, umm can you dick touch your ass hole?"
Just as stunned by Granddads response the Grandson shaking his head answers "umm no Granddad it can't"
Granddad quickly responds "well Grandson, that means your not old enough"
Grandson slumps forward bummed and confused.
A few minutes pass and Granddad cracks open a dirty cooler pawing through the ice and water and pulls out a beer. Slams the cooler lid and with one hand pulls the tab and starts drinking.
Grandson asks again "Granddad, can I have one?"
Granddad smiles and responds "well Grandson, can your dick touch your ass hole?"
Grandson's head falls as he responds "NO Granddad it can't"
Granddad smiles and shrugs his shoulders and again says "well that means your not old enough"
About 10 minutes go by and the Grandson remembers about the cookies Grandma had packed him. He reaches into his pocket and pulls out an Oreo, twists it in two and eats one half.
Granddad notices and asks "Hey Grandson, can Granddad have a cookie?"
Grandson thinks for a minute and replies "well Granddad, can your dick touch your ass hole?"
Granddad sits up all straight with a smile and says "why yes Grandson it sure can"
Grandson pulls the bag of cookies tight to his chest and yells "well then GO FUCK YOURSELF"