The sound made during sexual intercourse, in the "doggy style" position, as the testicles of the male smack against the vagina of the female with the thrusting motion. The "rod" or "penis" is "knocking" or "pounding" the interior of the vagina.
"Damn dude I gave this trick rod knock last night when i was hittin' it from the back. I did work son!"
by Douggie Fresh July 30, 2008
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The term used when 2 men are having vaginal sexual intercourse at the same time, and their members bump into each other intervaginally.
Employee #1 getting a cup of coffee: Hey, what did you do over the weekend?
Employess #2 getting a cup of coffee: Went to a movie and did laundry, you know, the usual... You?
Employee #1 getting a cup of coffee: Frank and Bob came over last night and they did some rod knocking in my wallered out cooch, you know the usual (then points and waves at Frank and Bob)
by Spanks Johnson December 3, 2017
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