An idiot who often barges into a social situation and unintentionally, yet loudly, makes an ass of himself on a frequent basis. Often a dinkster is so socially inept that they are trouble to be around.
(Variation of a dink, with more of a clueless conotation.)
The dinksters took a harmless, silly prank way to seriously and they called the cops on me. How dink is that!!