1 definition by 03Mach1

The act of the male penis shrinking in horror and retreating into the abdomen whenever danger is present or a very unpleasant, anti-arousing thought is experienced. Much the same way a turtle retracts it's head into it's shell when faced with danger.
The thought of Brandy nekkid makes me turtle up big time.
by 03Mach1 August 25, 2005
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