Instead of saying FUCK YO COUCH, you say MUCK YO COUCH. As to not be rude and swear. The word muck comes from poker and Ricky Oneill and Ryan Stryker say it so it must be cool. So Muck your couch
A reference to describe someone who's got a hot body but also has an ugly face, or if the first thing you notice is their ugly face. This cover the whole scale of uglyness, a less refined man/or woman may find a muck face attractive.
In hockey, when a player fakes a forehand shot on goal, but instead of taking the shot, swings around the net, and takes a backhand shot on goal which enters the net in the top corner.
Etymology:
'muck', most likely derived from the sound of hockey skates on ice.
'peanut butter', a sticky, delicious substance, used in this instance due to it's ability to stick to roof of one's mouth and temporarily incapacitate an individual.
'top shelf', refers to the placement of the puck in the net, particularly the top corner.
Commentator: "...he moves to take the shot, but wait, he's faked out the goaltender, he swings around, takes the shot with a backhand slap and... muck muck peanut butter top shelf, he scores!"
After a good doggie style romp, the jizz left on the tip of your cock gets rubbed into the chicks bunghole. A little poop gets mixed in during the rubbing and you muck it up.
After banging the bitch doggie style, I blew on her back. Then I mucked it up for a bit, before banging her sister.