Similar to beer goggles in nature, but different in effect. Tennessee Goggles is experienced when you drink a few too many Lynchburg Lemonades and you suddenly find your cousins attractive, and start to question your sexuality and its underlying morals.
Guy 1: I drank too many Lynchburg Lemonades last night and damn-near fucked my cousin.
Guy 2: Don’t worry, you were wearing the Tennessee Goggles, so it doesn’t count.