A coworker so odious they never does their job and makes more work for everyone else but gets paid more than you. Typically is really fat, small minded, shops online during work hours, and leaves work before everyone else. Also they are really good at lying about being sick and abusing FMLA leave.
Damn, Marissa is such a fat kelly! She was on Facebook all day during work while I had to handle all the sales calls and deal with all the people she pissed off.
by Chedwardo May 09, 2018
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A really awesome girl that met Matt Winter and is going to marry Louie Stephens! also a girl that is adored by all of Rooney!
*Stop being a fat Kelly about it!*
random dude-You are not insulting her, you just gave her a compliment, haha, sucker!"
by misty October 08, 2004
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