Slag

A combination of the word "slut" and the slur "f*g." Slag is a derogatory term that refers to promiscuous same-gender loving people.

Person 1 - "Person 2 is a total slag!"
Person 2 - "Hey! Not sure if you're aware, but that's actually a slur! Please don't call me that."
Person 1 - "I had no idea, thank you for educating me. I will remove this word from my vocabulary."