Crime

Sean “Diddy” Combs would urinate on Cassie Ventura himself during his “freak-offs” — and once had an entire blow-up pool filled with bottles of baby oil for the sick sex sessions, she testified Tuesday.

“Sometimes Sean, he himself or the escort, would urinate on me,’’ Ventura told the jury at Combs’ sex-trafficking trial in Manhattan federal court. “Sean urinated at the same time.”

She said that once when a male prostitute peed into her mouth during the “humiliating’’ encounters, “It was overwhelming.

“I choked,’’ the witness said.