I hate it when somebody does that, even if they just try to be funny, because first of all they do not sound like you do, usually end up sounding like a commoner of some sort. Same with doing the South African English or Afrikaans in a movie - it sounds like we are inbreds between England and Australia and do not know where we belong - and yes some languages do sound strange with the accents, but leave it alone.... it is my language to mock, not yours dammit
What was he saying in anycase?