This requires two men to be performing the cowboy position on their sexual partners. They also have to be perfectly aligned with each other because when the two men ejaculate simultaneously they kiss, hence Cowboy Kiss.
Joe: WASSSSUPPPPPP!
Chris: Nothing, just chilling out relaxing after a few cowboy kisses with Mateo.
Joe: Dude, you're fucked up....
After performing analingus on each other, a man goes down on a woman who is menstruating. At the same time, the woman Performs fellatio on the man. After the male ejaculated, the couple meets for a kiss.
"Did you hear about Josh and Darcy did a Neapolitan Kiss?"
"Dude that may be the grossest thing I've ever heard. A poop-cum-vagblood kiss?"