n. something that should be difficult to accomplish, even for a skilled and talented person, yet is easily blundered through and successfully completed by the most incompetent individual, usually by dumb luck. Named for an unskilled gentleman with a knack for accomplishing the above on a pool table.
v. the act of successfully completing a difficult task with relative ease, esp. when the person in question lacks the skill to accomplish said task.
Hapless poll player: "I don't believe you left me behind the 8-ball again!"
pool player: "What are you talking about? It's a kosmo!"
Observer: “That was a hell of safe.”
Pool player: “It doesn’t matter. He’ll just kosmo it and run out.”