A young lady stops by her grandmother's house on the way to a dance. She wanted to introduce her boyfriend to her grandmother. As they were chatting, her boyfriend spied some peanuts on the coffee table. He began munching on them as they conversed.
After about an hour, they were getting ready to leave and he thanked 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."