Meet The Tenderloins, lifelong friends on a mission to embarrass the max out of each other. Since they were kids, The Tenderloins have been daring each other to do the most embarrassing, uncomfortable things possible. Now, in an attempt to find out once and for all who's best under pressure, they’ll strap on heart monitors and compete in the most awkward social experiments America can dream up, recorded hidden-camera style. The loser must do the most mortifying challenge ever. Find out who's got the biggest balls of steel every week on Impractical Jokers.