Fact

I swear teachers are aliens, eyes in the back of their head and teleportation

For more Chemistry related hilarity, check out the "Things I Won't Work With" Chemistry blog:
http://pipeline.corante.com/archives/things_i_wont_work_with/
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It updates very infrequently, but what does go up is... eye opening and endlessly funny.

Apparate, don't need to disguise this potions class for the muggle.