It doesn't happen often, but a meteorologist with a Maine TV station tried bravely - and failed - to continue his forecast after being overcome by a fit of laughter he just could not stop.

The video is quite remarkable, given he has a high pitched contagious laugh - and he tried desperately to keep on going.

It all started with a prank he tried to play on the anchor that obviously backfired. 

Weather presenter begs for broadcast to stop after breaking down in hysterics