a sexual act where-in a male puts on a strap-on-dildo backwards and procedes to position two seperate women both in front and behind and repeatedly moves back and forth between the two women using his penis on the woman in front and the strap on dildo on the woman behind, much like the old fashioned computer game, pong.
i am so tired! last night I was playing dong pong, and it takes twice as much out of you.
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