Because they mess up the whole house!
Anyone else got some fun jokes your kids have told you?
A furtographer
He's still there.
A. So they can find their way back to the house.
Because they are **important**.
Not enough cement EDIT: Okay thanks for pointing out that I messed up the wording but the joke is supposed to be the funny part
Take me to your litter.
Because the sign at the park said "Fine for Littering"