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1.
A hideous person, one who is busted, fat, ugly and/or awkward looking.
Kelly Osbourne, now THAT'S a bergle.
by EZrocks12345 March 23, 2011
 
2.
To have sex with a person without their knowledge.
Man 1

"Dude i'm totally gonna slip some roofies in that girls drink and Bergle her :)"

Man 2

"Holy shit are you serious man? Your gonna go to jail you know that right?
by Yarrp August 03, 2010