entershamement

noun, the joyous feeling of doing something (normally alone) you know you should be ashamed of, for example watching Pets Do The Funniest Things or laughing like a drain when a little girl falls down & cuts her knee.

David walked into the bedroom to find a surprised Victoria dancing in her pants in front of the mirror singing The Final Countdown into a deodorant can at the top of her voice.
David; "Now that's entershamement!"