When a person eats the vagina by flicking his tongue around the vagina whilst putting both pointer and pinky fingers up. Hence based off the famous rock band, calling it THE KISS.
While in the act of kissing your partner you breathe in through your mouth sucking all the air from their lungs creating a panic state in fear of "death" while also arousing them.
When two men spread there ass cheeks apart and forcibly press sphincter to sphincter. During this act one of the gentlemen will begin to flatulate filling the others bowels with his methane gas.