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drilling a hole in a girls spine and having sex with the hole. often times, this is a segway into necrophilia. Also, using the blood as lube is a common event. The hole resembles a dolphin's blowhole and the act of fucking it "the dunking".
Chris: Dude I was totally dunking the dolphin with Becky and Laura last night.

Alex: Dude, what happened?

Chris: Becky's dead and Laura should be!

Alex: LMAO!!
by D'shiznit February 01, 2009
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