On blades in the eye or butt…

What’s it called when you have a stabbing pain behind your eye – like someone has slid a sharp silver cold thick blade into your socket and like it’s clunked right into the bone, and there’s a kind of squishy, prickly feeling – but you’re slightly scared to put your hand up to see if everything’s ok? And what’s the name of the equivalent sensation, only – you know – up your butt?