The meanings of the acronym/abbreviation VGTG in the Gaming terminology is I am the greatest!. Looking for the definition of VGTG? What does VGTG stand for in Internet Slang, Chat Texting & Subculture ? Find out it here! 1 meanings for VGTG. Internet Slang VGTG abbreviation meaning defined here. This could be the only one professional web page dedicated to explaining the meaning of VGTG (VGTG acronym/abbreviation/slang word).