On a recent episode, Grant's "Slang This!" included “fake and bake”. I think that this should be "fake 'n' bake", and that the origin is a play on the name of the "Shake 'N' Bake" food coating product that was once (is still?) available. Lo' and behold, Wikipedia agrees with me. What do you think, Grant?
I grew up in southern San Diego, CA and we used the
term "fakebake" to describe people. Like, "Oh my God, Kelly totally
fakebakes, she is so orange." My friend and I would also joke about
how many of the girls we knew had developed "tanorexia." Years later,
I heard someone use this term and laughed. I guess we weren't the only ones.