My buddy was on a recent business trip and met an older woman at a bar one night. He said she wasn't bad for a 57 year old woman. They drank a bit, then she asked him if he had ever had a mother and daughter threesome? He said no.
So they drank a bit more, then she says that tonight was his lucky night. So they went back to her place. He said she turned on the hall light on and shouted upstairs, "Mom are you still awake?"