Lucas desperately wants a kitten and loves going over to my parents house because they are currently cat-sitting for a friend.
Lucas: "Grandma, when is that black cat going to poop out some kittens?"
Grandma: "You mean birth kittens?"
Lucas: "When is that cat going to birth kittens?"
Grandma: "Well, that cat is a HE so there won't be any kittens"
Lucas: "Darn it!"