Aguilera Syndrome
The act of trying to showboat a talent one is known for, whether it is vocally, physically, or mentally, and screwing up at the wrong place at the wrong time. Can be easily treated by keeping it simple and doing it right.
Christina Aguilera, we get it, you can sing, but please don't screw up the National Anthem...she did. This was the most recent documented live cases of Aguilera Syndrome.