Definitions by Big Jez

KSI

KSI (Kissing Sphincters Indiscriminately) are a community of anilingus enthusiasts on XBox Live.

John: Dude, why does the mic on this headset smell like ass?
Jeff: Oh, I joined KSI the other week and they made me sell my toothbrush.

KSI by Big Jez October 17, 2013