Casandra "Cassie" Ventura is opening up about why she participated in the "Freak Offs" — hours-long sex parties where she alleges her former boyfriend Sean "Diddy" Combs forced her into sexual activities with other men.

In Sean “Diddy” Combs’s sex-trafficking trial, star witness Cassie Ventura spent hours being cross-examined by the defense.

On the stand in court Tuesday, Cassie alleged Combs would "bash my head, knock me over, drag me, kick me, stomp me in the head if I was down."