This collage of photos will speak for itself:
My favorite pose is that of Barney's, third row, middle. That's his Superman pose. Heh.I have very little energy left though and I can't elaborate what went on in this episode. But if this photo's gotten you curious, check this site's account, it's where I got it from.
And I think I also have to say: this episode felt like a shout-out to Friends' Ugly Naked Guy! Yeah.