"Caught!!" joke
A young lawyer went to work generating billable hours at a prestigious law firm. After six months of 20-hour days, the senior partner who had become his mentor told him that if he continued this diligence, he might someday be considered for partner.
After another six months, the electricity went out one night in his office. Not being able to work, he headed home a bit earlier than usual. When he arrived there, his mentor's car was in his driveway and all the lights were out.
Fearing the worst, he quietly entered the front door, removed his shoes, and tiptoed upstairs where he could see by moonlight his wife and his mentor in a passionate, naked embrace.
He stole back down the steps, let his car roll silently out of the driveway without starting it, then drove back to his dark office, where he sat sweating in his chair and said, "Whew, I almost got caught."
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