Cracked rib. Me and my friends were playing football (tackle at least) right after a SAT exam about 5 years back, and I jumped on a fumble. My friend running at me lost his footing in the sand, and fell knee first into my side. Everyone laughed and called me a [censored] and told me to get up and keep playing, which I did. Only later the next day when I realized I couldn't take a full breath did I get a x-ray done.
