Top Definition
When you have sex sans condom. Used in reference to the risky nature of such an endeavour.
Always use a hat skin diving can get you in trouble.
by red5 March 10, 2005
1 more definition
To have sex without the use of a Condom or protection
Guy1: I just got laid bro!
Guy2: I hope you used some protection because skindiving is dangerous these days..
or
Guy 2: i hope you didn't skindive and catch some terrible stuff
by 5NEDM September 13, 2011

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