Lots of things that ultimately come down to hyper-mobility (thanks Ehlers-Danlos!), including:

• Lick my elbow
• Pull my shoulder visibly out of socket (not painful at all, and happens if I carry something heavy if I’m not careful)
• Pop my hip out of socket while standing (sometimes painful, always somewhat unpleasant, so I’ve had to learn how to not do it)
• Hold my hands behind my back and pull them to my front
• Rotate my arm >360°
• Bend my thumb to my forearm