OKay, I'll add one to the jerk list....
People who wait until the cashier totals up their order and THEN start making out the check and THEN need to balance their checkbook.
I'll add another to the Jerk list:
People who think every thread is about illegal immigration. (#10)
Or, after completing their transactions, they stay in line and put their money away instead of stepping aside to let the clerk wait on the next customer.
It's your turn when the guy in front of you leaves; not one second before, clean your own house and let the slobs live as they may.