1. A small creature that children own as pets, usually called the name of their favorite condiment. Ex: Peanut butter, Mustard, Ketchup.
2. The name for a man that a younger girl is strangely attracted too. The man is older in this case.
1. Fanny Jo: I got a pet guinea pig!
Susan Mae: What's his name?
Fanny Jo: Mayonnaise!
2. Aly: Guinea Pigs is so hot today!