A challenge where one goes into a pool and drinks as much of the water as they can before needing to come up for air. They then get out and throw up the water. Whoever throws up the most water wins.
Becky: why are they opening their mouths in the water?
Sarah: oh, they're doing the pool water challenge. I'm gonna record them throwing up!
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