A variation on the commonplace bullshit, or horse shit, horse-fuck denotes an occurrence of bullshit which is beyond encompassing by normal, logical sounding bs.
For example, while talking on Ventrilo and playing any first person shooter:
"Horse-fuck, dude, he just shot me straight through a building!"
"Horse-fuck, dude, he just shot me straight through a building!"
by Grenadeh September 05, 2009