Grandma Saperstein and Grandpa Rabinowitz

Grandma Saperstein and Grandpa Rabinowitz are sitting on the veranda
of the old folks
home rocking back and forth in their rocking chairs. Grandpa
Rabinowitz rocks forward in
his chair and says to Grandma, "Fuck you!"
Grandma Saperstein rocks forward in her chair and says to Grandpa,
"Fuck you too!"
Grandpa becomes very much excited and shouts, "Fuck you!" swinging
more forward
again.
Grandma remains graceful but leans forward and says, "Fuck you again."
This goes on for about 10 minutes. Finally Grandpa says, "You know
something,
Grandma, this oral sex thing ain't all it's cracked up to be."