knasboll

Etymology
From. Compare.

Noun

 * 1)  a goofball (someone crazy or dumb in a silly way)
 * 2)  a weirdo, a wacko, a nut (when used semi-ironically to refer to people who are less amusingly goofy)
 * 1)  a weirdo, a wacko, a nut (when used semi-ironically to refer to people who are less amusingly goofy)