Mechanic who haphazardly opperates on motor vehicles while drunk/eating paste. usually starts (drinking) at 6am.
Jughead and Tim are a couple of stumble bums.
by D.D.T. May 7, 2006
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An unfortunate nickname for any male who smokes cannabis and has his hair grown below the ears.
Guy 1: Yas we're going to Konnor's today! :D
Guy 2: What a stumbling earwig.
by OGstains September 11, 2011
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A person with drown symdrome (has an extra copy of chromosome 21) and anyone that is mentally retarted, or has a mental handicap. The Abbreviation is SW. The mass transportation of SWs in public schools is known as "The Stumbly Wumbly Parade". They are transported in yellow scool busses in Oakland, hense the phrase:

"I go hyphy, dumb, stupid, retarded, while ghost-riding the yellow bus"
Guy: Whats wrong with that guy over there, he seems retarded

Other Guy: He is, he's a stumbly wumbly
by Jaden Korr September 12, 2007
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Someone who has done wrong or made a mistake.
I got way drunk last night; I'm such a stumbling Otis.
by churnice June 12, 2008
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A term describing completely the situation that the question is not "Is there smut," but "When will you stumble upon the mountains of it that exist."

It can be used to describe coming across fan-fiction, or just generally cliche and poorly assembled smut.
I was smut-stumbling the other day and came across the most horrifying fiction to ever filter through my optic nerves.
by ManicM February 5, 2010
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Someone who makes graphics/web pages with refrences to Stumble-upon, in a bid to look really cool, and get loads of hits/activity.
Fred - "Oh look this guys made a stumble-upon related gag, and i just stubled it"

Gary - "Fucking Stumble-hogger......."*loads shotgun*
by Gutya August 12, 2005
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A cookie, biscuit, or other baked good whose ingredients include some type of hallucinogenic drug, usually marajuana.
Everything was going fine at the Steve Perry concert until that lunatic, all hopped up on stumble biscuits, threw his light stick up on stage.
by Talbert Oakley April 5, 2007
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