From Moped Wiki
joke (jōk) n.
1. Something said or done to evoke laughter or amusement, especially an amusing story with a punch line. 2. A mischievous trick; a prank. 3. An amusing or ludicrous incident or situation. 4. A nonsensical post on a moped forum involving "humor" that is not to be taken as a truth, you aggro dorks.