That is actually a pretty fun way to play Rock Paper Scissors. But... if it isn't appropriate for high schoolers to be yelling about hydraulic super size parties in public, I can only imagine how inappropriate it is for a group of clearly not high schoolers...
Is that Hairo's first time being in the newspaper or something? I would imagine that at this point, the press would be like "oh it's this guy again," or have their own "Hairo Heroisms" corner