Because the censor erased the letter "s".
Put an apple on your head & stand still he'll Tell you.
They start coffin.
Walnuts. What do you call balls on a chest Chestnuts. What do you call balls on a chin My throne
Jiggle its balls
A Loco Motif
Snort stories
There is no F in way.
You take the letter "S" out of "sub", and the letter "F" out of "way".
Gluk gluk gluk (say it out loud)
THE PUNCHLINE OF THIS JOKE HAS BEEN CENSORED BY THE GOVERNMENT OF THE PEOPLES REPUBLIC OF CHINA, PLEASE REMAIN CALM WHILE WE WILL DEAL WITH THE OP IN A CIVIL MANNER.
A: They are the only ones who erase their notebook when the teacher erases the board.