DP is a common way of introducing someone in a very sweet and wholesome manner.
When John entered my home, I greeted him with a polite DP.
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Two penises or otherwise phallic objects penetrating two of a person's orifices at once–be it the vaginas, the mouth and pussy, the ass and pussy, or the mouth and ass, so long as the actions occur at the same time.
The one benefit of having been born with two penises is that I don't need a buddy to practice DP.
DP stands for Daddy Paul. As in the legends Logan and Jake Paul's father himself.
Person 1: Did you see DP on Logan's latest vlog?
Person 2: Yeah! Looking great!