Is sex work?

A U.S. Marine Colonel was about to start the morning briefing to his
staff. While waiting for the coffee machine to finish its brewing, the
colonel decided to pose a question to all assembled.

He explained that his wife had been a bit frisky the night before and
he failed to get his usual amount of sound sleep. He posed the
question of just how much of sex was "work" and how much of it was
"pleasure?" A Major chimed in with 25-75% in favor of work .
A Captain said it was 50-50%. A lieutenant responded with 25-75% in
favor of pleasure , depending upon his state of inebriation at the
time.

There being no consensus, the colonel turned to the PFC (Private First Class) who was in
charge of making the coffee. What was HIS opinion?

Without any hesitation, the young PFC responded, "Sir, it has to be
100% pleasure."

The colonel was surprised and, as you might guess, asked why.

"Well, sir, if there was any work involved, the officers would have me
doing it for them."