The act/form of straddling over someone's mouth and letting one loose. For maximized blurpie results, cover the mouth and plug the nose simultaneously.
Jessica Alba is so hot, I would let her give me a blurpie any day of the week. I would even suck the fart out of her ass.
When the female partner uses her mouth to suck the last few drops of semen out of the male's penis, immediately after the male ejaculates inside the female's vagina.
My girlfriend gives the best blurpies!