awesomeo-3000 is when somebody achieves absolute perfection in the field of being awesome. indeed, this word is very rarely used.
it can also be said when somebody does exactly what you say perfectly.
drill sergeant- "goddamn it cadet drop and give me 50!"
cadet- "yes drill sergeant!"
(50 push ups later)
drill sergeant-"goddamn it cadet i might as well call you awesomeo-3000!"
"shit he just fucked every woman on the earth, he is awesomeo-3000