JOKER!

MOTHER: Come on, Billy, eat up your cabbage, it's good for growing children.
BILLY: I don't want to grow any children.

TEACHER: If you had one dollar and you asked your father for another, how many dollars would you have?
VINCENT: One dollar.
TEACHER: (sadly)You don't know your arithmetic.
VINCENT: (sadly)You don't know my father.

RON: You dance beautifully.
JEAN: I wish I could say the same about you.
RON: You could, if you were as great a liar as I am.

TEACHER: Now, Brian, what is the formula for water?
BRIAN: HIJKLMNO.
TEACHER: Not the alphabet!
BRIAN: You did say it was H to O.