Of all the musical masterpieces the cast of Glee has covered for their choo-choo train of jazz hands, the most important of all has to be Rebecca Black's "Friday." The most interesting thing about it is that it's sung by all men.

I'm not quite sure exactly who's singing this (is it Artie, Finn, and Sam?) but one thing is for sure, it's as Auto-Tuned as Black's original. Well, then again, so is everything on Glee so it's not that surprising. Now, if you'll leave us alone, we're going to be partyin', partyin', yeah(!) to this for the rest of the afternoon.