Hey Jez,
Welcome to the boards! We have a section called 'introduce yourself', if you start a thread in there to tell us a bit about yourself, we'd love to welcome you to the forum!
I'm not 100% sure whether it'd be better described as a sublux, or as a 'Sulcus sign' (have a google

), but I think you'd definitely be better off not getting into the habit of pulling it out!!!

You could stretch yourself out like that, make it worse. How are you at carrying shopping? My shoulders first started coming out when carrying shopping bags, and when standing on the bus and holding on - every time the bus jerked about, my arm would clunk out

. It didn't take long before my arm appeared to be hanging out it's socket simply with it's own weight. I had physio to build up my rotator cuffs, and now my shoulders sit very nicely in their sockets and it takes a lot for them to be troublesome - I have this way of holding myself and tensing my muscles when doing stuff so I can deliberately hold them in. Exercise is massively important! If your shoulders are troublesome in any way - get yourself to the GP with some info print outs (see getting a diagnosis threads in this section) to get yourself to the physio to get the exercises to keep your shoulders working well. If they're troublesome - sooner rather than later is much easier!!! Defiitely worth trying to avoid future problems with plenty of exercise!
Best wishes,
S