Misspellings on the classroom blackboard: "SPEACH" (speech), "TRIEL" (trial), "LEEDER" (leader) and "POLITTIX" (politics).
This episode marks one of the rare occasions when one kid directly slimes another. When Justin maneuvers Alasdair into saying "slimy," it's his chance to behave as if Alasdair said "slime me," immediately dumping a bucket load over Alasdair's head.