A potato headed person with a strange sense of style. He favours bobble hats, trampolining and Gold lame t-shirts. Their tastes in the opposite sex tends to switch between the extremes of age and as such they are commonly under restraining orders from schools and old peoples homes.
That bloke in the bar in the bar is a bit of a Jimma he is scaring the schoolie.
Hmmm that Cougar has made a mistake there she has picked up a Jimma