the action of hitting or smacking a pair of bodacious voluptuous breasts so they jiggle

Since girls think it’s funny to slap our ass and dicks on April 12 we will slap their tits!

Tit-slapping is a sadistic fetish of slapping a woman's breasts for sexual arousal. It is one of the Japanese fetishes imported into American mainstream fetish porn. One western form features woman on woman tit slapping in a cat-fight scenario. A more sadistic form features a bound woman with large breasts being subjected to violent breast slapping, twisting, pulling and pinching, resulting in tears, obvious pain, discoloration and bruising to the breast. It is a form of sadistic humiliation.

To slap someone or something really hard with your tits.

When an individual (male/female) slaps another with their tit in ones face or torso, be it a man boob or a saggy old D cup tit.

When you take your dick and slap a bitch nipple with it.