A Joke From Charlie (Age 6)

Why did the amoeba drift around?
(why?)
Because nothing had been invented yet! It's the beginning of life!

A Joke From Kate (Age 4), Who Is Trying To Keep Up

Knock knock
(who's there?)
Pom
(Pom who?)
Pom! I'm an amoeba! I'm drifting around! HAHAHAHAHAHAHA!