Informal survey time! Do you remember when you first learned Rock Paper Scissors? (I don't, but Scott does, hence the curiousity!) Tell the story if you like, or just respond yes or no! Or wait for something more relevant to come across your feed.
I think I learned it from older cousins when I was about 3 or 4 & we were all at a fast food restaurant. .. . but I could be totally imagining the whole thing! lol