We've been having a shitload of snow over the past few days, which is rare for the UK. Last night I had an epic snowball fight, but near the end I got hit in the ear by a snowball.
It was ringing very loudly for a few hours, but I thought it would be fine when I woke up. But it's not - the ringing has gone, but I can't hear out of it properly...everything is muffled from that ear.
I've done a bit of googling and come to conclusion that since I can blow air out of it, it might be punctured.