Similar to the notorius Weeaboo, a Gagaboo is one who is obsessed with the horror that is Lady Gaga, and are brainwashed by her bullshit. However, instead of speaking
wapanese, they constantly speak in the "future tense" and believe they are better than most regular, sane people.
Don't bother argueing with them. They're not
wrong, they're born that way.