As Halloween jokes go, this one may top them all.

Witness the chainsaw massacre prank, which features a chainsaw-wielding madman and his legless victim scaring the pants off of innocent folks in a parking garage.

Imagine the scariest thing you can possible summon in your imagination -- going antiquing with your significant other on an NFL Sunday? This is about a billion times more frightening.

Trying to figure out how much your insurance will cover your visit to the ER? Same.

Jimmy Fallon trying to do a comedy sketch without getting an A-lister involved to actually do all the heavy lifting? Yeah, it's even more horrifying than that.