The acronym for the word "overdose", which usually means to dose too heavily on a drug or drugs. The words also refers to an dangerous amount of a drug or drugs injected into one's body or consumed. Gamers also use the acronym for someone who is really good at a certain video game or for characters in games who are ridiculously overpowered due to them having really good moves or attacks or special attacks that give a huge advantage.
"I don't care if...if we win or lose here, but I've already decided in my mind that you're a huge fuckin' corn ball because your name is ImTooPowerful and you're teabagging as if you're OD at this game."
-LotusAsakura, November 2020