Thanks for that clause: "Sand Spurs"... When I was stationed in Del Rio, TX, the very first week I was there I totally and unexpectedly trashed my bicycle tires on a ride across a field. I was a "babe in the woods" from the NorthEast. Later, in my (up until then) always bare feet, I totally trashed my feet on a run across a similar field. I know what they look like (the head of a mace weapon) but I can usually not remember the term when I try to.
Nasty plant/ grass, that thing is... I like TX/OK, too, but that nasty is not why.
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I am rolling on the floor, I promise you!!! HAHAHAHAHAHA