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1 definition by Jon Wright, Brett Dugan, William Wezenter II

A sloppy dolphin is a sexually performed act that involves the male eating out of the anus of a female, while fingering her clitorus until she squirts. While he is doing this, he is making dolphin sounds in an attempt to get her to do the same.
I was in bed and I figured I should give my girlfriend a birthday surprise... the sloppy dolphin.