Grandad!
A grandson came to visit his grandparents and noticed his grandfather sitting on the porch in the rocker, wearing only a shirt, naked from the waist down.
"Grandpa, whatcha' doing? You're weenie's out in the wind for all to see!" he exclaimed. Grandpa looked off in the distance, not answering.
"Grandpa, whatcha' doin' sitting out here with nothing on below the waist?" he asked again. Grandpa looked at him and said, "Last week I sat here with no shirt on and got a stiff neck. This is grandma's idea..."