Fail bisquit Share definition Flag Phrase used to describe a person, place, thing, act, or event that has drastically failed. "Dude, you're such a fail bisquit for not catching that." or "This whole trip was a fail bisquit because of the blown tire." Fail bisquit by McFeely Inc. March 1, 2010 0 0 Get merch Get the Fail bisquit mug. Buy Now — $32.95 See more merch