Top Definition
If you're a guy and you'v ever taken a dip in a really cold pool, you know exactly what "Retractasackaria" is. For those that need further explanation, your nuts shrivel up like raisins after emerging from cold water. George on Seinfeld referred to it as "shrinkage".
Man that water is cold! If you go in there you'll get retractasackaria!
by Ty Webb May 03, 2004
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