Mammipital Force
The force exerted on the breasts of a woman during the act of sex while the woman is on her back and the man is on his knees. This force causes the breasts to move in an equal and opposite circular motion away from the center point of the sternum and is extremely mesmerizing to the man.
"Man, I ****ed the dog **** out of Shirley last night. I had that mammipital force rockin' to the R. Kelley. I know she ain't walkin' straight to-DAY!"