Insult, curse/swearword. Popularised by the character Lister in Red Dwarf. Derrivetive of the word Smegma meaning cock cheese.
"What a smeeee. What a smeeeeee. What a smeeeee'eeeeeeeeeeeeeee" ~ Failed attempt by Kryten to you it in reference to Rimmer.

"Smeg off" ~ Common/favorite use of it.

I'm a little mouse named Keith,
I circumsise men with my teeth,
I don't do it for leisure,
Or sexual pleasure,
But just for the cheese underneath.
by BaldurHW January 10, 2009
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(n) Acronym.

1. Social Media Expert Guru.

2. Social media professional, advocate or evangelist, particularly one that tweets, blogs or attends social media related events/conferences

3. A self-declared expert in the emergent world of social media, as evinced by their exciting PowerPoint presentations and super-slick videos using the latest in motion graphics, Really Big Numbers(tm), and that Fatboy Slim "Right here / right now" song.
1. "Is it ethical for a #smeg to delete a #smeg worthy tweet because it makes them look like a dickhead?"

2. "As a good little social media expert, I just snaffled it for myself."
by agronnymous July 15, 2010
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The action feeling your sweaty scrotom and then slapping a friend in the face.
Argh m8, you stuck your tongue out when you got smegged!
by t0m3x May 20, 2004
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The shortened version of the word "smegma", which is defined as: coagulated semen surrounding the end of the penis; also found in the hair of high schoolers
Dude, I just yanked off a huge crusty piece of smeg; lets put it in that kid's pizza!
by Paccali November 13, 2002
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True that this word originates from Red Dwarf, however Smeg was the name given to the 'living' organism that grew in his scuzzy mug
Rimmer is a smeghead :-)
by Lavalova January 31, 2007
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the word used to censor swear words on www.Bushtarion.com
Hey lets atack Id# 1581
no you smeg head thats me!
by Fish May 30, 2004
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