I can't remember the title to the really good really funny fic. I think it's a oneshot and it's in highschool, Koga and Inuyasha are issuing challenges to each other and Miroku is like egging them both on and taking bets. Every time the guys fight , Kagome sits on the sidelines and you later find out someone is with her on the sidelines. Anyway near the end Miroku issues the guys a last challenge, since prom is coming up and at the end you find out Sesshomaru is the guy who is with Kagome while the guys are busy fighting. So basically Miroku tricked Koga and Inuyasha out of there prom tickets and gives a set to Kag/Sessh and keeps the other set for himself and Sango.

For the life of me I can't remember the tile but I'm somehow able to remember all that

I think you are looking for Mating Rituals of the High School Boy by SunsetMiko it is very funny. I loved it.

Yeah that was it, thank you sooo much!