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A person who has a visible buttcrack.
Lady 1: OMG, did you see how low Jenny's pants were?
Lady 2: Yeah she looked like a real bumscag hurhur.
Bumscag by TRLEChippers December 21, 2009
Related Words
The accumulation of residue, in one's ass-crack, that appears after long periods of bodily neglect (read: poor hygeine). The residue is composed of various elements; the most common are: poop, ass pubes, accumulated sweat resin (aka: salt cream), hemroidal or vaginal medication residue, blood, lubricant, and fuzz from undergarments.
I went camping last week and didn't shower for 4 days. I had to scoop the Bumslaw from my crack with fpoon!
Bumslaw by Bumslaw August 25, 2009
The Bumsnag is a sausage made out of the gluteus maximus and the gluteus minimus.

Traditionally cooked on a barbie with a cold beer in the left hand and the tongs in the other, the bumsnag is a culinary delight straight from outback australia!

Originally being made only in Canberra, the bumsnag has quickly spread to other parts of the world, with variations coming out in the US and in great britain. those are most likely fried however, as the barbie is not in use in these places. These variations are known by many different names, especially as a spam-monger.

The bumsnag has a very rubbery texture, mainly dependant on the human from whcih the gluteus Maximus and Miniumus was taken from.

The fat content of these sausages are mainly dependant on the body mass index of the original donor. In recent years, low-fat varieties have come out.
"Oy! you wanna have a barbie next week?"
"yeah mate, ill bring the beers!"
"okay - ill bring some bumsnags"
"awesome mate"

OR

"go hard son!" - father yelling out at the juniour footy!
"aaah - what a bumsnag!" - father when the umpire calls holding the ball on his son!
bumsnag by James Mc James May 22, 2006
Residue, left on a toilet seat, usually in the shape of a "Y" (reflecting the reoccurring placement of an unwashed ass-crack, from one, or multiple persons), that collects over time, due to an insufficient cleaning/maintenance routine of the toilet in question; most commonly seen in gas station stalls. The composition of Bumslaw may vary; the most common elements include: poop, ass pubes, accumulated sweat resin (aka: salt cream), hemroidal or vaginal medication residue, blood, lubricant, and fuzz from undergarments.
That bathroom hasn't been cleaned in months. The bumslaw on the seat is half and inch thick!
Bumslaw by Bumslaw August 25, 2009
A piece of well formed fecal matter hanging precariously from one's anal region
"Dude, that guy smelt worse than a wombats bumsnag!"

"She was so ugly I wouldn't even turkey slap her with a bumsnag"

bumshagger 

Bumshaggers are people (Most are called Olivia) who like to bumshag people. This means they liked to be shagged in the bum.
"Olivia is such a bumshagger she can S.J."