An expletive that can be used much the same as "crap," but is less mainstream. It has the potential to sound like German, prompting many to ask for a repeat and to inquire as to the meaning and root of the word.
Krapf is derived from the American bus company KRAPF Buses. The company's motto is "The only way to go". It is true: The only way to go IS to take a krapf.
Krapen are legendary monsters of giant proportions. They are reportedly sighted after a particularly disastrous misadventure on the toilet seat and the term has come to describe a mythologically disgusting shit. The sheer size and fearsome appearance attributed to the Krapen has made it a common feature in various fictional works.
Bro 1: Holy shit who used this toilet last!?
Bro 2: Haha, yeah dropped a bomb didn't I?
Bro 1: Dude you have totally unleashed the Krapen!!