A fork of Rural Dictionary
"Et Vain Osaa" A finnish expression, used by semi-nerds and sarcastically aligned people. Not too widely known in finland. It can be translated exactly as: "You Just Don't Know How To Do It"
Some dude: "Man, I can't get this conveyor belt to work" Some Other dude: "Hah! Evo!" OR Someone falls down, or fails miserably: "Evo!"