haha!! that reminds me of the episode of south park where cartman becomes the 'hall monitor' and his new authority goes right to his head.

 

Thats a pretty full on diagnosis. Will have a check on it. It is only very random and seldomly happens, but like you say very annoying when people think you are revving it like a pimped out wannabe driving a souped up 'Gremlin' (??!!??)

 

I would look for weak of faulty vacuum hoses first. Cheap/easy to fix, but could be split like mine was or pin-holed and cause an intermittent problem as you describe.