Top Definition
Show tune and theater deficiency illness.
Causes:
When an actress/actor/theater geek has not been in a play in a long time and starts to have issues due to lack of theater or performing.

Effects:
Not being able to pay attetion. Belting out songs at random times. Staying up all night listening to showtunes on youtube being extreamly loud in the shower and wishing their life was a musical.

Cure:
Audtion for a musical or join a choir or glee club so you can sing your heart out.
Friend: Hun are you ok?
Girl: *humming* what..i think so?
Friend: *turns away for a second* cause you seem jiterrey
Girl: *belts out into song* THERE'S NO BUISNESS LIKE SHOW BUISNESS
Friend: WHATS WRONG WITH YOU?!
Girl: I've got STTDI..I've got it bad
by THEATERGEEK4 February 02, 2011

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