What is Short Timer?
1.
That bastard co-worker who found a better job and no longer gives a shit about shit.
Don't even bother waking Jim, he's a short timer.
See
2.
After turning in your resignation, you end up not giving a damn about your job during the remaining two weeks notice you gave them
Sure, I'm leaving and gave two weeks notice, but I REALLY want it to be over NOW. I have short timer disease
See