Shape

Not sure if this goes here or not but there was a griefer in London's sandbox and he changed my shape so it's all messed up and I can't change it even if I equip another skin

Did you sit on any objects there that could have had naughty scripts within, or accidentally click OK on an animation permission dialog? If so, it might be an easy fix: teleport to a different sim, relog, and stay out of the sim where there is permission to disfigure you for a while until that object can be cleaned up. Also, if you picked up or were given any new attachments or other items during that episode, take them off and delete them from inventory.

Am assuming you mean he gave you a shape that you don't like and can't change back.

Firstly, are you sure you are changing the SHAPE and not the SKIN - have known someone who made this mistake and wondered why they couldn't change back. If you really are, then often the vest approach seems to be to logoff and come back on tomorrow as it may be a server or communication problem.

It kept sitting me in this poseball that changed my shape but it put me back in after I stood up and there was no box asking yes or no and it's done that to a couple other people who have walked into the sandbox so I think it's just anyone who walks in there except the griefer gets changed.

and yeah it's the shape. All the limbs are stretched everywhere like a big tangle

EDIT: Thank you, relogging in a different sim fixed it

YEah, when you sit on things, the animation permission is handed over automatically, that's why you will want to stay out of that sim for a while (animation permissions only work if you and the object are in the same region). Once you are out of that place, relogging will make sure that the disfiguring animation is stopped on your end and to everyone else, as long as you steer clear of that sandbox.