Fuicep Share definition Flag An amount of marijuana as big as one's bicep muscles. A combination of the words "fuica" and "bicep". Stoned dude- "Hey! I got some fuicep out the back, wanna join me and get uber-stoned?" Fuicep by SprocketTalker May 4, 2009 0 0 Get merch Get the Fuicep mug. Buy Now — $32.95 See more merch