Because the censor erased the letter "s".
They're the one with the dirtiest knees
Tell him the lightbulb is his mother.
Sack-religious.
Bingo.
They think it's about the romance and majesty of Camelto.
A riveting tale.
Post office.
Kay (K).
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.