1 definition by Lucifer13x

Top Definition
To have your avatar face replaced with Bert's (Sesame street).

It started off at the exercise section of bodybuilding.com, as one person wanting their avatar 'Bertified' and others soon followed, for teh lulz.
1. John just got Bertified.

2. Hey guys, Bertify me for teh lulz.
by Lucifer13x August 14, 2009

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