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Also known as a "crappy ending". The opposite of a happy ending when getting a massage. When you are so relaxed that you shit yourself during the massage.
Dick: Dude, I just had a great massage just now but I need to tip the masseuse big.

Tom: Why, happy ending?

Dick: Nope. Actually, it was the polar opposite. I was so relaxed I shat myself at minute 45. Unhappy ending...
by the coMANd'r May 22, 2015
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