Megaphonies is the fourth and final challenge in the Impractical Jokers one-hour British Invasion special. The jokers are making odd public announcements through a bullhorn on the tower bridge. The active joker will have no control of the bullhorn, as the other three jokers will be in control and speaking for them through the use of a microphone nearby. The goal of the challenge: do not turn off the bullhorn; if the active joker can't take the consequences, they can turn off the bullhorn if they'd like, but doing so will result in a forfeit, which means a loss. All four jokers couldn't take the heat and lost.