buttmonster 

Someone who is being either annoying, inappropriate, or an asshole.

Suck vage, you're being a buttmonster.

buttmonster by poopcock December 19, 2007

buttholstering 

the willful retention of noxious emissions from the butthole, or the habit of refraining from farting.

The female sex suffers a much greater risk for spontaneous combustion due to their predisposition to buttholstering.

buttholstering by tblank January 9, 2010

bukmonster 

The 'Bukmonster' is a name given to a sneaky Japanese pervert who derives pleasure from publicly masturbating- whilst sneaking up on clueless girls and ejaculating on them, usually aiming for their faces.

See bukkake

Girl A: 'Oh Shit run it's the bukmonster!'
Girl B: (turns head) 'Where?'

**splat**

bukmonster by Nolan Pettersen March 13, 2008

buttmonger 

Insult or derogatory term.

That buttmonger stole my purse!

buttmonger by notabuttmonger November 29, 2004

buttmaster 

"buttmaster" is a new zealand slang term for someone that is considered to be very good at everything s/he tries. usually exceptionally good looking with chiseled features. a buttmaster is typically found inside a pub.

ben the polak is such a buttmaster that i've never seen him fail anything he has tried. he has chiseled good looks too.

man, you're a real buttmaster aren't you.

buttmaster by jimmy the thompson March 22, 2007

Butt monster 

An alternate name for a demon (or "pinky demon") in ID Software's original Doom game series.

Blood and viscera flew everywhere when I attacked the group of butt monsters with my chainsaw.

Butt monster by Timotheus325 January 21, 2009

Butt Monster 

An oversized 'butt plug'. See 'Butt Plug'

You, me, the Butt Monster. Saturday night. Be prepared

Butt Monster by MKULTRA August 8, 2013