When a girl gives oral to a guy while he's taking a massive dump and he throws up on her back. In order for it to be considered "The Ultimate Blowjob", she must be sucking his dick while he simultaneously shoots a liquid shit spray all over the toilet bowl, throws up bile on her spine and then he proceeds to rub it on her back so as to create a burning sensation.
Virginbitch: "Did you really give Billy 'The Ultimate Blowjob' last night?"

Cumdumpster: "Yes, he sprayed a shit mist everywhere, it was amazing."

Virginbitch: "I'm so jealous! Did he rub his bile on your back?"

Cumdumpster: "Yes, it was an orgasmic feeling while he shot his load down my throat. He timed it perfectly"
by WebbyLoad January 30, 2014
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When one girl is giving you a blow job while you are fingering another girl and licking another girls boobs.
" Woah I had the craziest night last night, i got the ultimate blowjob."
by ralph mayhem June 21, 2006
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