stack it

Verb

1. To fall over; to topple.
   • Stacking it is just part of skating. There's no avoiding it at least every once in a while.
   • […] as I was stepping down, put my foot into a dog-made hole and once again, totally stacked it onto a sickled ankle. This one HURT and I was yelling and screaming for a good few minutes […] - 2006 October 7,...
   • She did a close fly by (which, of course, I wasn’t ready for) but I did get a few shots before she stacked it and came back for a chat. - [2010 November 28, “By ‘ek, it’s ‘ot (and more kite surfing)”, in Charlie's...