This is the person with whom you reunited, for whatever reason, after previously ending a relationship. She was your ex-girlfriend and now is your y-girlfriend. The term was created to facilitate communication. The inspiration for this term rose from the Generation Y following Generation X (“Gen X”). The homonym was appropriate for the reasons everyone asks.
“My y-girlfriend and I are going to her cousin’s wedding.” The listener can understand how that experience may be different than if you were a new, current, or just a friendly date. In general, the listener understands that you have had a relationship with this person, parted with them, grown, and reunited after working out your problems….or not, so some say, “Why?”
by LaJeSchu May 26, 2013
Get the Y-Girlfriendmug. When someone crosses the line, when one person is angry and the second one keeps teasing him so touching the caiman , comunitario used in Spain
yo saco el caimán y tu lo tocas, pero no dices que no te advirtió que no me gusta quando se habla de mí hermana.
by Majete August 19, 2017
Get the yo saco el caimán y tu lo tocasmug. by Y Life September 21, 2020
Get the y lifemug. 
My dumbass friend: What's the second to last letter in the alphabet.
Me: Y
My dum dum bubble gum friend: Because I wanna know.
Me: Y
My dum dum bubble gum friend: Because I wanna know.
by TheRareNerd June 30, 2018
Get the Ymug.