(Noun / title) Any typical sad overweight white woman 35-55 years old, who imagines their past bits of minor glory as a former teen gymnast, taekwondo green belt or sold the most Girl Scout cookies one Spring once, outweigh having turned into a depressing sad, overweight cow. Often such women live their lives on social media or talking to strangers in the street, commenting on things they disapprove of, preaching unsolicited lessons.

(Also common: Fat Tina, Fat Jennifer, Fat Claire, etc.)
"I was hanging out at the mall when some Fat Karen came up to me and said I shouldn't be feeding my toddler McDonald's. She gonna try to make *ME* feel guilty, when she weighs 280 lbs because she was once a student athlete 3 decades ago?!"
by DarnellSaysBoo June 15, 2019
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Any four door pickup truck driven as a personal vehicle.
Tyler had to choose between child support and making the payment on his Fat Karen 350
by JB Hooligan December 16, 2022
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Large, overweight, disgusting woman over age 55 who hasn't retired and died yet. She sits at the front desk for hours whining about other people not working. She is quick to tattle whenever someone is sitting in the breakroom. If she does not like her assistant she will text another coworker to change assignments and when that other coworker rightfully screenshots and submits her messages to their supervisor she will indirectly call him out for days and be childish about it. She cries at the smallest inconvenience. She is a divorced fat bitch who claims to be the victim when clearly she was the abusive one in the relationship and has kids who haven't spoken to her in 13 years because they want nothing to do with her. She rallies the other single, divorced women at work because they're her only friends. She steals other people's shifts during shiftbids who are going to nursing school and wonders why she's hated so much at work. She is called a fat cunt behind her back because no one can stand to be around her or listen to her toad-like voice.

She is that fat Karen woman who assaulted a shoe store employee by throwing a box of shoes at her after being told to put on a mask.
Fat Karen cried when she was given an assignment in OR 4 because she can't handle orthopedic surgeries and she can't handle doing her own job. Far Karen just wants to sit at the front desk all day, play wannabe manager and whine about how no one is working not being aware of how hypocritical she is being because she is a fat cunt.
by katytheredpanda December 13, 2022
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