Titty Drumming 

Titty Drumming; v. The art of ritualized percussion of a female humans breasts performed by vigorous rhythmic hand slapping upon the surface of each breast. The act is typically performed by the dominate partner in a sexual relationship as a subconscious assertion of control.

"When my girlfriend started hounding me at work last week, I gave her a great Titty Drumming."

Titty Drumming by Ussmak May 14, 2010