To be performed by experienced perfesionals only. Its when you are getting a blow job and you pull out just as you are about to cum. You cum in one eye, and poke the other eye, so thet the cum filled eye opens. then you trademark it by slapping her nose with you still hard cock giving her a nose bleed. Also refered to as the BLAP BLAP BLAP..
"Man this one time at band camp, this chck was giving me head and i gave her the angry blap, and shoved a flute up her ass.. "