Funny Dirty Joke

At school, this class was having a small quiz contest based on general knowledge. The teacher asked a boy from the read team a riddle."What am I? I am long on men, short on boys, and hairy." The boy blushed. "Miss, I'm too shy to say it..."
"Oh come on! Just say it, it's not even embarrassing!" Replied the teacher.
"Okay....It's...A penis.." Said the boy.
The teacher slaps him. "Idiot! It's a hand!"
The whole class laughs.