this is when you are making out with your significant other and you casually put your hands on their cheeks, but then quickly plug their nose and try to suck the air out of their lungs.
After a woman's husband/wife, common-law spouse, or boyfriend/girlfriend passes away, the woman's kiss becomes a 'Widow's Kiss.'
She has a unique awareness that any time she kisses, it could be the last time she ever kisses again. Therefore each kiss is held with fierce passion and lust like it's the last one she will ever have.
"He was kissed by a woman with a 'widow's kiss' and he couldn't let go , because he hasn't felt this kind of lust for life in any woman he's kissed before."
The Devil's kiss is the heinous action of the tip of one's penis making contact with the cold porcelain of the inside of a public toilet.
I went to take a shit in the strip club bathroom, where I was unpleasantly surprised by the icy cold sensation of the Devil's kiss. Now it burns when I pee. Thanks, Satan.