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once upon a time, two boys were on a long bus ride. A strange smell came to their noses, it was a fart, yet they could not place the smell. It has essence of sweat but a tinge of egg... they dubbed it 'swegg'

it is now a very uncommon insult, used only by Brad Clarke and Dave Cruise.
"Shit, thats one sweggy fart"

"that fool is one bad swegg"
by Brad Clarke April 18, 2004