A man is walking down the street,
when he notices that his grandfather is sitting on the porch in a rocking chair, with nothing on from the waist down.
“Grandpa, what are you doing sitting out here with nothing on below the waist?
The old man slyly looks at him and says,
“Well, last week I sat out here with no shirt on, and I got a stiff neck. This was your Grandma’s idea!”