Diddy Accused Of Having Male Escort Do Gross things To Cassie

As the first day of the Diddy trial progresses, the prosecution is detailing what went on at the "freak offs" that their RICO and sex trafficking charges against Puff are based.

One particularly uncomfortable detail involves Diddy's ex Cassie -- who will be a witness for the prosecution -- and a male prostitute.

According to the government, Diddy told the escort to urinate in Cassie's mouth until she choked.  He also recorded such acts to blackmail the singer.

Puff's lawyers argued that the freak offs the government claims were illegal were simple parties involving "voluntary adult choices made by capable adults in consensual relationships."