When a male doesn't wish to look baby smooth on his undercarriage so he leaves a very short defining stubble. Such as 5 o'clock shadow, but for his Zamboni.
Friend: Hey man don't you have that date tonight?
You: Yeah i do!
Friend: Better shave up in case she wishes to examine your crime scene...don't go overboard though.
You:No worries i already have the 5 o'cock shadow going.
Friend: Bro?
You: Bro!
by Mr. The Saint February 5, 2012
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noun;
referring to the hair on and around the genitalia being kept at a short length but never going full turtle shell
"I never go full turtle shell. I keep the 5 o'cock shadow"
by prehistoricdawg March 21, 2014
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