You think I bought that Captain Underpants book for DJ, didn't you. Hah.
My favorite jokes from The All New Captain Underpants Extra-Crunchy Book O' Fun 2:
Q: Why did the cookie cry?
A: Because his mom had been a wafer so long.
George: Excuse me, mister, I'd like to buy some toilet paper.
Grocery Store Clerk: What color would you like?
George: Just give me white. I'll color it myself!
Q: Why was the mushroom always invited to parties?
A: Because he was a fungi!
Q: What's green, cold and topped with whipped cream?
A: A snot-fudge sundae
Q: What's invisible and smells like bananas?
A: monkey burps!
Tommy: Mommy, can I lick the bowl?
Mommy: No, Tommy, you have to flush like everybody else!