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1.
A fat boy scout.
Man, look at that boy scout, hes pushing about 280 pounds and hes only an eighth grader! Ya, hes a yubbie.
by Kelc Crownen November 25, 2010
 
2.
A chubby boyscout.
Did you see how many s'mores that yubbie ate at the campfire?
by Rentlef November 24, 2010