Why is it socially acceptable for a woman to press her anatomy on a man?

I was playing amateur DJ at the New Year’s party last night.

It became a running joke all evening that women who wanted me to play a song should press their breasts up against me to get my attention.

In discussion of the evenings activities with a female jelly, she suggested that I ask the collective why women can push their breasts against men openly and in public, but men cannot rub their groins against women socially without assault charges?