This is going to sound weird, and I am sure they didn't do it, but there was a shower scene (I can't recall the ep., it was on a few days ago) with Hawkeye and BJ and (I SWEAR!) when Hawkeye stepped out of the shower, the door was still open and I SWEAR that he had no drawers on (I mean, you didn't really see anything, but the camera angeld pretty far down and there was NO brief line)! I know my face changed! It was JUST enough that you may have had to have seen the ep. a few times before you noticed it. I hope that Alan Alda was wearing flesh-toned undies (or, maybe he was getting a quick shower himself! Who knows?). A very weird post, I know, but it was just one of those things that after you see it, you're like "WTF?"
A Hawkeye/BJ shower scene
