Horrific act of gross sexual violence, as featured in "murder trainer" videogame Manhunt, and as a result in playgrounds across the United Kingdom.
"Manhunt is a very violent game - it's a game that features people getting bludgeoned to death, people getting bummed in the gob, people getting garrotted..." - a videogames "expert".
by An Outraged Parent August 10, 2004
Get the bummed in the gobmug. To un-intentionally show you bum. Usually only the top part is revealed when bending down. Or if you’re a builder of some description you will already be wearing loosely fitting pants that assist in revealing your bum crack.
I was walking along the street when I saw two moons looking at me. The fattest builder was showing every one his bum crack. To which I shouted out say no to crack!
by Harpo July 20, 2004
Get the Bum Crackmug. 
by silentotto July 14, 2008
Get the bum watermug. A person who has a alcohol or drug problem, who sleeps where they land, wears the same clothes every day, but has a house/apartment that they live in, and otherwise appears to be normal.
Your alcoholic uncle Bill who you always find asleep in the middle of the kitchen floor naked after a night of binge drinking, that the family lovingly refers to as "your" domesticated bum.
by JadeBlueFox January 7, 2013
Get the Domesticated Bummug. by JoshuaRay September 25, 2007
Get the bum snoggingmug. by Finn2232 December 29, 2017
Get the bum sharkmug.