A word used by Italian-Americans (or those that like their slang) to refer to a man's mistress. It is a corruption of the Italian word "comare", meaning godmother. See "gumba" for the equivalent (sort of) term for men.
1. Am acronym for "gallon of milk a day". A method used by practitioners of bodybuilding to put on significant amounts of muscle by consuming a gallon of milk, every single day.
Frequently used in a facetious manner, denoting the ridiculous lengths people go to for the purpose of bulking up.