Distressed Jeans

Why is it always Grandpa's fault?

I commented on the state of the lad's jeans on his return with Grandma from Pizza Hut lunch with his Great Grandma. (Hence the state of his face!)

"Grandpa, do you wear jeans?"

"No son, they don't sell them to old people."

"Yes they do, Grandma wears them."

Cue howls of laughter from me and shrieks of horror from Grandma.