Definition - What does Mammary Intercourse mean?
Mammary intercourse is a type of non-penetrative sex that involves a man thrusting his penis between a woman's breasts. A woman can increase the friction of this type of sex for her partner by squeezing her breasts together.
Kinkly explains Mammary Intercourse
Mammary sex is often performed at part of foreplay or as non-penetrative sex, making it much safer than traditional unprotected sex. Although it is not very pleasurable for some women, mammary sex does not have to be uncomfortable. Lubrication can be used on and between the breast to make the penis glide more smoothly. A woman can also lick or suck the head of her partner's penis while he stimulates her vagina and clitoris with his hands or a vibrator.