Rock "or something"

Army terms can be a bit strange sometimes. We call ear plugs "ear pro," (short for "ear protection"), but why not just call them ear plugs? It's much simpler.

But here's one example in the other direction, found on the heaters used in MREs:

What's funny is that I can't think of anything that gets the message across in a more efficiently way.

"Just lean it up against a rock or something." Oh, OK. That works....