A guy says to his wife, "I’m in the mood for a 69er."
She says, "It’s that time of the month, but if you don’t care, I don’t care."
They go into the bedroom, and are 69’ing like mad dogs when the doorbell rings.
She says, "Answer the door."
He says, "But my face is a mess."
She says, "It’s just the postman. Answer the door, and if he says anything, just tell him you were eating a jam sandwich."
He opens the door and says, "I’m sorry about my mouth, I was eating a jam sandwich."
The mailman says, "I wasn’t looking at the jam on your mouth…I was looking at the peanut butter on your forehead."