Super Massive Bum Hole, when someone has a very wide builders bum.
"LOL, today Mandeep had a SMBH!!!" Dan said
"I know, I almost got sucked in to her SMBH =" Kelly replied
by Dan Milner April 29, 2008
Top Definition
Shaking My Bald Head
An alternative form of the acronym "SMH" for those who are bald.
Just to be different, Dillon has officially adopted "SMBH" as part of his texting jargon, instead of plain SMH. He assumes that most bald people like himself, would appreciate the distinction.
by Elan Vital December 08, 2011
Acronym for Suck My Butt Hole. Mostly used over text message or social media hashtag as an insult. Sometimes it can also be used as a response when you don't know what else to say.
Cyber Bully: you are the ugliest person I've seen in a long time.

by sherbz February 11, 2015

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