When the recipient of oral sex obtains a mouthful, and then proceeds to kiss/share the contents with the giver of said oral sex. Malegender usually being the giver.
Taking your man's cum in your mouth and not swallowing or spitting and deepkissing your man and letting him take some of his own cum back.
My Gay boyfriend and I just had sex and I took his load in my mouth and after sucking more cum from his spent cock He French kiss me taking some of it back. It was so damn hot thus snowballing with my man.