A person who goes on a straight date despite being flamingly homosexual. (This is typically but not exclusively used to describe a situation where the couple met online i.e. Tinder)
My friend Melissa went on this date with a guy from Tinder, and the moment he opened his mouth and called his female friend a queen…she knew he was a rainbow trout.
by Darkraiguy July 3, 2022

This is the act of a man performing oral sex on a woman when menstruating while simultaneously getting oral of the woman been a 69 , and while the man ejaculated into the woman's mouth his is filled with menstrual fluid, yummy, not to be tried by the faint hearted
Jaysus man I gave some night to the misses last night so i did, we gave ourself some rainbow kiss I tell ye that,,, "a what"
by Smokey863 May 21, 2024

by Whigger164 August 3, 2016

The act of having unprotected intercourse with a woman in either missionary or doggy position while she is on her period, preferably in heavy flow, then when at the point of ejaculation, pulling out and masturbating over her body. The resulting ejaculate should be pink in colour. If not, try again in 25-30 days.
'Dude, she was on her period so we had sex unprotected, when I was cumming I pulled out and totally shot a pink rainbow over her tits/stomach/ass.'
by kieron_j December 21, 2016

by Wighters January 17, 2017

by Slave Knight Gael December 6, 2020

by P3pper November 29, 2016
