No, anything pish is automatically pish.
Still Game is hilarious, Brave was brilliant, Braveheart is great. Burnistoun (based on the sketches posted here) would appear to be utterly shite, the bra joke may have been fine if it was a one-off throwaway comment in a sketch, but a minute of the same joke being repeated ad nauseum is not remotely funny.
It was as insufferable as the Peter Griffin falling over and holding his knee then inhaling through his teeth for ages.