Rape jokes?

Hayley • Mama to be of our rainbow baby!!

My boyfriend and my assalent work together.

He comes home everyday and tells me what has been said about me....then he tells me it's all of them joking around about it...examples

"He said you took it willingly and was begging for more"

"He told me you took it like a champ"

"Why can't you do me like you did him?"

My boyfriend doesn't get why I'm so mad about it..I've tried explaining it and telling him it hurts for him to joke about something so serious and traumatic....but he still does it...

Any suggestions as to how I can get it across to him that I want him to stop?