Top Definition
Refers to the kids who grew-up during the explosion of the media and social aspects of the internet, causing them to spend so much time in front of the computer screen, that they do not get any exercise and eventually become obese.
I went to my nieces track meet at the high school, and ALL of the girls--in the stands, AND on the track team---were fatter than The Michelin Man!

"That's Generation Fat for you."
by mike49677 May 28, 2012
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