The day all tgirls are fertile and can finally be submissive and breedable. Tgirl breeding day happens every year on August 1st
Girl 1: "Aw man Ive always wanted to be submissive and breedable but I cant be bred"
Girl 2: "Dont worry today is tgirl breeding day, and Im going to breed you all day long"
Girl 1: "OwO"
An acronym for Thank God It's Not Monday. Similar to TGIF, but with a wider period of use. TGINM is often used when someone gets that specialTGIF feeling when it isn't actually Friday.
Peter is a sick man on the first day of every week. But when he isn't down with a case of the Mondays, he is TGINM'ing.