The husband prepares himself for bed. He approaches his wife and asks if she wants to have sex.
"Oh honey, I am sorry. I have another of my headaches. I am afraid I don't quite feel up to it this time"
"Well, that's what I expected" he says as he drops his pajama bottoms off.
"You see, I dusted my **** with aspirin. Would you like to take it orally or anally"