Not so much a word but a sound. This sound has different meanings depending on context.
He was burhmmmed till he couldn't sit down.

A:Do we have homework?
B:Yes
A:Burhmmm.

A:Any beer in here?
B:Yeah.
A:Burhmmm!
by Brian Spew March 23, 2003
Get the Burhmmm mug.