Listerine Mouthwash
Created | Updated Oct 20, 2010
This is achieved by tipping a capful into your mouth to intiate a personalized but potent environmental disaster. Essentially you have just caused all the acid rain fears in the world to become reality inside your buccal cavity and thus convinced the creatures in residence of what a bad neighbourhood they've moved into.
A similar but not identical effect can be produced by a good curry.