1) name for the glans penis adapted from the vulgar bell end to refer to a foolish person or someone with no apparent control of their actions.
2) WWII Nazi death camp situated in North West Germany.
"check that barmcake out - he's only gone and fallen asleep at the bar and pissed himself. The stool's soaked and somebody could slip on the floor - what a fucking belsen!"
by Ben Cooke November 24, 2007
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Someone whose fart gases are so potent, that inhaling such gases is likely to lead to the prompt demise of the inhalee.

A purveyor of the Silent-But-Deadly

See also: Auschwitz Arse
Vicky, you Belsen Bum! Must you pass wind like th.......... *dead*
by Sah rah October 20, 2007
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