The act of ramming your erect member into a females anus. The noise the female emits often resembles the "Indo-Pacific Bottlenose Dolphin", which inhabit temperate to moderately warm waters of the Northern Pacific Ridge. For more information visit your local library.
The Poster above clearly doesn't know what a Happy Dolphin Is.
by Shotgun22 August 07, 2008
When you approach the female for anal, she turns around looks at you and eagerly nods her head up and down like flipper while emitting a shrill eh-huh, eh-huh pleased noise
I took this girl home last night and gave her the ol happy dolphin.
by Luke Palmer January 16, 2007
when performing the act of sex in a doggy style position the male takes both of the bitch's wrists and pulls back on them making the broad look like flipper begging for a treat.
I was plowing this swamp donkey from behind and was pulling her hair to gain leverage... that did not get the desired depth so i took her by the wrists and pulled her upright with every pull she resembled a happy dolphin making that weird noise and everything.... She told me it was the first time shes ever been filled out before...
by o-dawgy22 April 05, 2011