A One Eyed Sniper is a term for someone in CS:GO or Valorant who entry peeks on either Ct (Defenders) or t (Attackers) with only the Marshal/ SSG 08.
They claim that they will entry frag someone and when they don't they try to find an excuse
Estyx : Oh watch this, imma pull an one eyed sniper *Estyx gets one frag and dies*
Team : Well done you achieved nothing
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi