TEACHER: Johny, how do you spell "crocodile"?
L-JOHNY: "K-R-O-K-O-D-A-I-L"
TEACHER: No, that's wrong
L-JOHNY: Maybe it's wrong, but you ask me how I spell it!
TEACHER: How can you prevent diseases caused by biting insects?
L-JOHNY: Don't bite any.
TEACHER: What is the chemical formula for water?
L-JOHNY: "HIJKLMNO"!!
TEACHER: What are you talking about?
L-JOHNY: Yesterday you said it's H to O!