Rumors swirl around the shadowy Bo Hweemuth, a mysterious student with secret gifts who has the whole school living in fear.

A T.P. prank gone wrong leads to clogged toilets -- and a fateful explosion -- that turns the boys' new French teacher into a mummy.

The boys' latest comic inspires their jorts-wearing Spanish teacher to become a superhero with otherworldly powers.

To get out of an epic assignment, George and Harold go back in time to the moment homework was invented to try and stop it before it starts.

The boys travel back in time to stop Mr. Krupp from becoming a bully, only to find that their plan has turned him into a ruthless businessman.

A school dance sounds like fun -- but only if the boys can keep their music teacher from playing DJ and putting everyone to sleep.

To steal Mr. Krupp's rule book from a tightly locked safe, the boys cook up a super-intelligent gas cloud who winds up turning against them.

It's a race against time as George and Harold try to get Mr. Krupp fired before he can have them expelled. But first: a faceoff with the Toot Fairy!

George and Harold get revenge on their gym teacher by writing him into a ridiculous new comic. But the joke's on them when life imitates art.

Holy guacamole! George and Harold are so determined to win an avocado-growing contest that they accidentally turn their science teacher into a monster.

After Erica compares her suspension to a vacation, a jealous George and Harold pull every prank in the book so they can get suspended, too.

After Erica critiques their comic book, George and Harold create a brand-new character -- a vampire who sucks the joy out of everything.

A chocolate-pudding "incident" sends George and Harold into hiding. But there's a new principal when they come back -- and no one remembers them!