What is Fucksteak?
1.
Refers to a person (typically a dead person) who is utilized for a combination of fucking (i.e. necrophilia) and eating (i.e. cannibalism).
"Now where did I put my fucksteak... oh yeah, it's still in the bathtub."
See
2.
1. an exclamation of surprise or dissapointment similar to "buttfuck" when "buttfuck" or "buttfucker" used as an interjection
2. a dumbfuck
Fucksteak! I lost my cell phone!
or
Wipe that shit off your upper lip, you goddamn ass-licking fucksteak!