He saw.

The Professor refocused onto the meeting with the dean. She seemed out of focus, and her hands were under her desk. Her breast seemed to bounce as she moaned touching herself.

Pull me over the desk you animal!

Moan

Rip off my clothes! You beast!

Moan! Moan! Moan!

Ravish me like a whore in front of everyone!

Take me MASTER! Take me MASTER!

While you stood there confused, since this woman hates you. However, you were the best candidate at the time. She couldn't say no without a lawsuit. Allowing you a probationary teaching gig. Now she's masturbating in her office looking straight at you, and we were only talking about work. You figure you better find and excuse to get out of their before she gets you both fired.

Your excused Mr. Corcoran. That was all you needed to slink off, and figure this out.