Son: Elizabeth has a guinea pig.
Dad: Why would she have a pygmy goat?
Eldest daughter: It's name should be Higby, the pygmy goat.
Son: Higpee, the pigby goat?
Youngest daughter: Higvee, the pygdee boat?
Middle daughter: Sounds like a cartoon.
Dad: Did you say guinea pig? I heard pygmy goat.
Mother: Laughing hysterically.