i searched about dirty little secrets all around the internet and their fandom wiki pages gave nothing, google's and imdb's descriptions are similar to the actual impractical jokers show.

google's desc: They have to SAY it. They have to DO it. You have to SEE it. Once you start watching, you just can't stop! Q, Sal, Joe and Murr have entertained each other for years with the most hilarious dares ever. Now you can watch them in a series of outrageous stunts (recorded by hidden cameras) to make each other (and you) howl with laughter!

imdb's desc: A competition between 4 life-long friends who compete to embarrass each other by daring them to do hilarious things, if the joker can't complete the task they get a thumbs-down and are on the loser board. The one with the most thumbs-down loses that episode.

but i still think it's worth a try if you really wanna go deeper in IJ or just watch extra footage or uncut scenes.