my girlfriend insists that I wear a purity ring when we are having unbridaled sweat soaked intercourse with multiple parters of both genders.

I feel mildly uncomfortable about the whole thing because on the one hand I love my girlfriend more than anything else. I would do anything for her. I have been with her for 6 years and hope to marry her one day.

but I dont have the heart to tell her that it makes me feel uncomfortable when she insists that I perform double felacio with her on a 60 year old homeless man.

I mean, I am a 90's kind of guy.... I understand that any modern relationship is based on trust, love, and ball gags attached to zipper mouthed leather pig masks..... but sometimes, when she ties me up in a corner and forces me to watch as she has intercourse with a train of multiple large black men, I fell almost like I am being used.

I am also getting really sick of her high fiving the other men after shes done then going out for beers with them and leaving me chained to the radiator for 16 hours.

I guess my question is.... what exactly is a "purity ring"?