Oh, Boy!

Charlie: Daddy, can you hold me?
Dowlan picks him up and puts him on his shoulders.
C: You put me on your head? What the heck?
D: Charlie, where did you learn that?
C: At church.
D: Who said it?
C: I did. (pause) I got in trouble.
D: When you're surprised, you can say, "Oh, boy!"
C: I can't say that.
D: When you're surprised, you can say, "What happened?"
C: A surprise? A present? A green present?