A Grungler is a bisexual male who most commonly hangs out with transsexual and/or gender people online, primarily on Discord. They are most commonly known for being funny and making weird characters.
The term originates from a fake/deleted UrbanDictionary definition which got spread around as a screenshot and has now become a meme.
Grungler: "Check it out guys, I'm the Grungler." *falls down entire flight of stairs*
Alice: "Nathan has been acting weird lately."
Nathan: "Поздравляем! Вы выиграли премиумдоступ к сайту(...)"
Sophie: "He's such a Grungler. He got hacked."
Or used with other caveman noises to signify:
2. (verb) to beat someone to death
3. (noun) a blunt force melee weapon
1. "He had no chance of winning. He had the inferior grungo."
2. "Grungo-bunga-lung" (I'm going to beat you to death)
3. "Ho-go-grunga-ba!" (I have found a melee weapon)