Junior Magician "'Orrible" Orrick had changed the pressure transmitter on a Whirlwind 10 hydraulic system and was squatting on the platform under the rotating blades when it sprang a low pressure leak. He put his thumb over the leak to staunch the flow while the engine was shut down. Unfortunately the oil was at about 90 degress C, so jerking the scalded thumb away and putting it in his mouth, he simultaneously placed his other thumb over the leak. End result was two weeks on Tea Bar duty with enormous bandages on both thumbs. Nickname change required...