Like Bill said....If they aren't paying you, they have more beer money

[Elrod]

First they have to buy it...

Then they gotta get it home...

Then they party with friends....

Then it's nap time.....

[JohnH]

Reminds me of an experience I had when serving as an Electronics Technician in the US Air Force (1966-1970).  A group of about 6 of us were nearing the end of our enlistment and we were scheduled for proficiency testing.  It wouldn't make any difference, aside from possibly a promotion a month or two before discharge, along with more responsibilities just when our focus was on getting back to civilian life. We were sitting around a table discussing strategies to score as low as possible on the exam, just because we were bored and wanted to mess with their minds.

Our group had a reputation for spending lots of off-duty time at the Airmen's club or partying in the barracks & off-base. Hey, don't judge - we were a bunch of single guys with an average age of 22. One career-type NCO was trying to persuade us not to do this on the exam. When everything else failed, he said "Hey, you guys like to party - if you score well you might get a promotion.  That would mean you'd have another $100 a month to drink more beer!"  The guy to my right looked him in the eye and replied in his most deadpan voice  "Sarge, we couldn't possibly."