to perform terribly, absurdly, and beneath expectations and intellect. An obvious failure. Choking under pressure.
Johnny flushed the mouse when he missed a wide open shot to win the game.
Tony flushed the mouse when his expert prediction failed to come true.
Nigel flushed the mouse when he cut off the guest speaker's microphone while they were answering a question.
Expression that signifies you really screwed something up, especially when operating under pressured. Similar to "dropped the ball, "spit the bit" or "choked" - only worse. First coined on the Tony Kornheiser Podcast.
The Northwestern Men's Basketball team really FLUSHED THE MOUSE when the lost to Chicago State 73 - 75.