rando teammates are the best sometimes because no one can stop me from interpreting their actions in the best light possible and develop dramatic little narratives in my head about what is going on and what is being communicated and sometimes it's just so much fun.
One of my favorite interactions from very early in my newbie turf-war only days was when a teammate taught us to shark in a specific place by this-waying, demonstrating, and then booyah'ing when we followed suit. We then proceeded to continuously wipe the enemy team that repeatedly rushed us from the same angle every time. We all learned something that day, I like to think.
Now, do I have any way of knowing that complex idea was actually the intent being communicated by that teammate? Absolutely not. But since we have no way of ever knowing for sure, no one can stop me from believing it.