Commonly confused with literally fucking someone with a chainsaw. "Chainsaw Fuck" refers to any zombified like humans that chase you down with a chainsaw. They usually wear a potato sack over their head with one eye hole, and are most notably found in the Resident Evil 5 video game. Its weakness tends to be a shotgun blow to the abdomen and/or head at point blank range or a few magnum shots to the head region.
"Oh shit watch out for that Chainsaw fuck!"
"Shoot that Chainsaw Fuck! He's gonna get back up"
"That Chainsaw Fuck is one nasty fuck."
"I just fucked up the Chainsaw Fuck with my Clint Eastwood magnum."