Don't think this clip has been put up yet but if it has v. sorry. It is the gorge Bradley James from BBC's Merlin blowing his noise on set.
Some TV show called Blue Peter had a woman work on the Merlin set for a day and she sort of jokingly tells him to be quiet while something is being filmed and he looks all bewildered and ill and the woman apologizes. In the description it says he had a cold.