WTF does this mean? I have had this going on for months. It usually starts twitching when I lift my arm. (Like when I'm sitting on the couch and lift my arm to rest on the top of the couch). Today it's just non stop. I'm looking at my shoulder rite now and it looks like a baby is kicking inside my freaggin shoulder. Anybody experience this shit? Doesn't hurt. Just really annoying.