Flabstinent 

A term referring to someone who has never been fat, or for someone who is trying to diet to remain skinny (someone who is "abstaining" from obesity).

The key to being flabstinent is proper diet, exercise, and frankly, good genes.

Flabstinent by Absolutely Punderful May 27, 2013

Fapstinent

The act or practice of refraining from masturbation/fapping.

Girl: How many times have you masturbated this week?
Guy: I'v been fapstinent for almost 2 weeks!

Fapstinent by iDenzilla June 2, 2015

fabstinent 

Being fabulously abstinent

Girl 1: “I know you wanna have sex with him”
Girl 2: “I can’t. I’m fabstinent.”

fabstinent by futurefixed September 14, 2023

Fatstinent 

When you are involuntarily celibate due to your weight. You are abstinent because you are fat.

In high school I was fatstinent

Fatstinent by Genny from the Roc November 20, 2021