When did Impractical Jokers Season 4 Episode 21 air?
Impractical Jokers Season 4 Episode 21 aired on September 3, 2015 at 10 PM ET.


Same jokers. New network.
This hidden-camera series follows four lifelong friends -- Brian "Q"' Quinn, James "Murr"' Murray, Joe Gatto and Sal Vulcano -- who take dares to an outrageous level. To find out who is best under pressure, the guys compete in awkward and outrageous hidden-camera hijinks with the loser performing what is deemed to be the most-mortifying challenge yet.

This live one-hour special is hosted by Howie Mandel in New York City to commemorate the show's 100th episode. The pre-taped challenges shown: The guys conduct interviews while the others try to make them laugh from behind a window, fake injuries at a grocery store, and cross off their "bucket list" items.
Direct answers for episode-level questions and details.
Impractical Jokers Season 4 Episode 21 aired on September 3, 2015 at 10 PM ET.
This episode runs for approximately 41 minutes.
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