A young lady stops by her grandmother's house on the way to a dance. She wants to introduce her boy friend to her grandmother. As they are chatting, her boy friend spies some peanuts on the coffee table. He begins munching on them as they converse.
After about an hour, they are getting ready to leave and he thanks the grandmother for her hospitality and especially for the peanuts.
"Oh, your welcome young man," she says. "I appreciate you finishing them up. Ever since I lost my dentures I can only suck the chocolate off of them."