"Mald" is a word used mostly by little Roblox faggots who only play Naruto games, Rogue lineage or Deepwoken. Mald/Malding means you are angry to the point of which you are balding.
Regular player: Bro this game sucks, that move is completely unbalanced.
Morbidly obese Deepwoken player: Mald about it kid.