While engaging in coitus on the beach or in the desert, the man "pulls out" and sticks his member into the sand, thus having the sand stick to it. He then reinserts it into his partner.
"I was banging Demetrius on the beach and then he stuck his dick in the sand and then back into me! That asshole gave me a sandy dolphin!"
by Sandy Dolphin Giver August 6, 2008
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