If you ask us, a Glee scene with all of guys taking off their shirts only makes sense in one context. It would have to be part of a musical performance or montage. So when Chord Overstreet (Sam) tweeted that he was filming a group number with the guys, we obviously perked up right away.
So what song could they be performing? That same day, John Lock — who plays one of the New Directions band members — tweeted, “This song we're doing today is taking me back to the summer of '02! Yeaaauh” We looked up a list of the top 10 hits from summer 2002, and we couldn’t help but notice that Nelly’s “Hot in Herre” was a the very top. Hey, if the boys of McKinley are going to take off all their clothes... that song would certainly fit.