I was really good friends with this guy, S, and casually acquainted with his girlfriend, D. Things were pretty serious between them... until she cheated on him. Multiple times, over several months, with several people. When he found out about it, she mocked him for not knowing sooner. Needless to say, he was devastated. He's a very nice person and was going to just leave her and let it go at that, but not me. I bided my time for a while until I heard that she had gotten into a relationship with one of the guys she cheated on him with and was planning on taking a summer trip to Europe. With the help of her housemate, who was in on this, I went into her room and rubbed a mix of itching powder and fine scouring crystals into all her panties. Soon, I hear from the housemate that she'd gotten a seriously awful rash all over her ass and snatch (she was too dumb to figure it out) and had been screaming at her new boyfriend over the phone that he had given her an STD. She had a total hissy breakdown over it, went for a whole barrage of tests, broke up with him, and missed the trip. I could have done worse, you whore. You got off easy. Don't fuck with my friend... oh my bad, he's my fiance now.