MCSUBSTANCE

Secretly copyrighted and trademarked by the McDonald's Corporation in 1992, McSubstance is rumoured to be a mixture of 2 parts asbestos, 1 part grease, 3 parts mayonnaise, and 4 parts unknown; with it, McDonald's are able to whip, cook, or stir the substance into any and all of their burger, ice cream and drink products, as well as their styrofoam containers. Can be used as a derogatory adjective. Example: This chicken tastes like a piece of McSubstance.