When a person uses pictures of themselves for dating profiles which are extremely dated or where they look way less fat than they currently are. Similar to a catfish but it’s pictures of the person albeit very very very dated or inaccurate.
Damn Brittany was 50+lbs heavier than those 2 year old pictures she had on her Bumble profile. She’s a total Fatfish.
by RuthlessT December 29, 2022
Get the Fatfish mug.
When you match with a girl on Tinder thinking she's fit but then you scroll through to her last picture, only to see she's slightly on the bigger side.

Jim: "Guys, I got a new match on Tinder"
Jim: *Scrolls through new matches Tinder profile*
Jim: "FUCK! I've been Fatfished
"I thought I matched with this proper fit bird on Tinder, but turns out I was fatfished."
by aintgot4eyesfornoreason October 10, 2018
Get the Fatfished mug.
Noun, someone who deliberately portrays themselves online as slimmer than they are in real life.

Verb, being the victim or perpetrator of such misdirection.
"Hey Bez, how things?"

"Not so good buddy. I'm feeling a little blue as I keep getting fatfished on Tinder..."
by bonelessbucket March 25, 2021
Get the Fatfish mug.
Similar to catfish. When a person who works at a place that wears a uniform goes into the back of the establishment and you expect them to come right back out. Instead a fat person in the same uniform emerges.
I expected Steph to come right back out from the kitchen shaking that sexy ass. Instead…I got Fatfished by Large Marge who lumbered out in the same uniform and made me question my attraction to women at all.
by Notmynamehere July 22, 2023
Get the Fatfish mug.