Titty fuck

From Voyeurweb's Wiki

Titty Fuck is more of a guy thing, when a guy lubricates the cleavage between a woman's boobs and slides his cock between them. It can be done with the woman on her back or with the man on his back, in which case the woman has to take the initiative. Sometimes, if the cock is big enough, the woman can lick the tip of the cock when it slides through, creating a heightened sensation. Either the woman or the man has to squeeze the boobs together to create enough friction for the guy to cum. When the guy ejaculates on her neck, it is called 'giving her a pearl necklace'.