Footpegs or foot pegs?

I used to like standing up on the bike when going off road or at slower speeds during a long ride but a dizzy rider smacked into me at a traffic stop today and the right OEM peg just snapped off. Scary stuff. What could've happened while I was riding? So, thanks to all the advice here, I'll be looking at new pegs right quick. In the meantime, I just swapped one of the rear pegs for the snapped one.