The small coffee size at Starbuck's; the only size on the menu there that makes any sense (et al Tall, Grande, Vente).
"Short" is the smallest size Starbuck's offers, but you'll only get this if you ask for it by name. If you do order a "small" the barista will likely give you a "Tall" because anyone asking for a "small" will get the "Tall", which is the smallest size for which the prices are actually on the menu. Also only their hot drinks can be served in the "Short" size. Sound confsing? Yeah, I hate Starbuck's too!
Military and prison adjective for describing someone nearing the end of their tour of duty, enlistment or incarceration. A short-timer is someone who has less then 90 days to serve. A Korean War veteran told me these terms were in wide use in the late 1940s; they have been in continuous wide use in the military since then.
Sargeant: "Get you head out of your ass -- make something of yourself soldier."
Private (to self): "I'm short . . . I don't give a fuck."