In the LGBTQ+ community, specifically gay men, the term "no fats no fems" refers to only being interested in connecting with other men that are "in shape and masculine". "No fats" means nobody overweight and "no fems" means nobody that has a feminine sounding voice, feminine behaviors or characteristics. This is a discriminatory phrase that is commonly used on dating apps, such as Grindr, when trying to romantically connect with other gay men.
*On Grindr*

Looking to meet new people for a good time - no fats no fems.
by isa14x August 28, 2020
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Hoi, her name ith Kim Chi, and she came to chop thuey da competition!
by DrewMonson'sBoyfriend February 10, 2017
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