When someone literally whips out his cock and slashes another person/object/animal with it. It is one of the most ridicilious ways of 'pwning' someone. Instead of saying "owned"/"pwned", you can say "Cock slashed".
The most terrifying monster that you could imagine. He was the head fry cook at The Krusty Krab when, one day, he accidentally chopped his hand off with a knife. To this day, he still has a spatula instead of his hand. There are a few signs to see when he is coming. The lights will flicker on and off. The phone will ring, and there will be nobody there. If you ever see the Hash slinging slasher, good luck.
Noun (slang), much-loved genre of film in which heroic vigilantes bring errant citizens (primarilyteenagers) to justice with sharp implements (primarily knives).