About a month ago I went and played tennis with my best friend, I had never played before so my form was wrong and my shoulder came out of its socket when I tried to hit the ball (embarrassing I know). I managed to pop it back in myself and wore a sling for a few days after getting an x-ray and I was fine. Today I was sitting on my bed watching YouTube on my laptop when I reached across my lap to grab my phone and my shoulder came out again! What is going on?? This has never happened to me before playing tennis. I blame Zendaya for creating Challengers which gave us the dumb idea in the first place.