. . . the darndest things (#2)

Today while we were going over a sample English Regents' Exam, I called on a student who had raised his hand to volunteer an answer: "Josh, go ahead." Unfortunately, there are two Joshes in that class, and both of them began to speak simultaneously. They looked up at me, and I shrugged and said, "Whichever of you wants to answer."
Josh #1 turned to Josh #2 with a determined look on his face and held out a clenched fist.
Anticipating some kind of inappropriate threat, I tensed, but before I could say anything, both Joshes pumped their fists in the air three times and made bizarre signs with their fingers.
Josh #1 had picked scissors, Josh #2 rock.
Without a word, Josh #2 breezily answered the question.