Oh my goodness Yami are you- yes, he was. Sure, they've shared a body for months and months, but it's pretty different now that Yami has a body of his own.

Luckily, he was facing the stall door and was working on the lock. He could see how it would confuse people who aren't used to it, especially someone new to this modern age, but since he had visited this clothing store several times (mostly with his mother or Anzu), it was simple for him.

Now that it was locked... Well, now what? Should he stay facing away? Turn around since this should be nothing new? Escape through the gap under the door and wait out there until Yami needed help unlocking the door?

Option A seemed to be the wisest and most decent choice, and so, Yugi locked his hands behind his back and stared up at the ceiling, waiting for the sound of rustling clothing to be relatively silent.