When your girlfriend starts to vomit, whether it be over a toilet or in an alley and you proceed to fuck her in the missionary position
by ss mm August 21, 2009
Get the yack in the backmug. A guy or girl who has the mentality that they are extremely attractive, all that, but are in fact the opposite.
by Todd Higginbotham November 8, 2004
Get the All Yackmug. by venge April 9, 2003
Get the cat yackmug. Usually refers to an extraordinarally ugly person.
NOTE: no matter how much alcohol you drink a swamp yack will never look good enough to take home.
NOTE: no matter how much alcohol you drink a swamp yack will never look good enough to take home.
by Pierre Genereux April 24, 2003
Get the swamp yackmug. "Jumping jack" as pronounced by Mexican laborers who don't speak good English. A jumping jack is a hand operated piece of equipment that compacts soil at a construction site.
by bumbleclot June 11, 2009
Get the yumping yackmug. 
