The Knights Who Say Ni come from Monty Python and the Holy Grail, the 1975 comedy by the Monty Python troupe, where the armoured knights block King Arthur's path and demand a shrubbery as the price of passage. Their barked cry of 'Ni!' became one of the film's most quoted gags and a durable internet reaction. In this clip the knights finally receive the shrubbery they demanded, which is why editors use the two-second cheer as a victory sting for the instant somebody utters the forbidden word.