A family of three [mom, dad and a 10 year-old girl] went down to Florida to visit a nudist camp.
The girl goes walking around on the beach and comes back to her mother and says, "Mommy, mommy, women down here have bigger breasts than you."
The mom replied, "That's right honey, but the bigger they are the dumber they are.
The girl goes and walks around again. She comes back to her mom and says, "Mommy, mommy, guys down here have bigger penises than dad." The mom replied, "That's right honey, but the bigger they are the dumber they are."
The girl goes on her way and comes running back to her mom again. "Mommy, mommy, Dad is talking to this really dumb blonde and the longer he talks, the dumber he gets.