Health Hazard
The practice of putting one's bag on the floor in the chemistry or biology labs, generally anywhere where there is potential danger. Someone would then be required to do a comedy trip over said bag whilst screaming "health hazard" in an attempt to get the bag removed. Practice was stopped when one comedy faller knocked loads of test tubes over and fell on them, cutting his hands to ribbons.
written by Na*h Do*g, approved by Susan