Grandma & grandpa laying in bed one night, when grandma says to grandpa, "Hey, grandpa now that your retired, is there anything that you always wanted but never got?"
"Yeh, there is", said grandpa.
"What is it?" asked grandma. "Maybe I can get it for you."
"Well, grandma, I always wanted a blow-job," said grandpa.
"A blow-job is what you want, then a blow-job is what you'll get. But I don't know how to give you one," said grandma.
Grandpa says, "Well I've often heard the boys at the plant before I retired, say that in order to get it right, their wives practiced on Ketchup bottles."
Grandma says, "O.K. I'll practice all day tomorrow and give you a blow-job when we go to bed."
The following night grandpa was waiting patiently with a super hard-on. Grandma approached grandpa, grabbed his penis with her left hand....................
........and began pounding the top of it with palm of her right hand!
Owwwww!!!