The practice of taking an ice bath or any cold water dip that covers the genitals, usually after a long run.
"That was a great 10 mile run this morning! I'm gonna go dunk the junk."

"Man, you must have balls of steel"
by Condemnedstickman April 16, 2010
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casual sex you intend to have with another person with no intention of contiuing a relationship. Most likely a one nite stand. Most likely said to a friend about a hot girl.
by aldeshsa May 5, 2009
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