My Brother, Where Art Thou? - S3-E5
Continuity mistake: The silver drink shaker moves closer to the orange juice container and away from it a couple of times through out the scene with Turk, J.D. and Dan. (00:04:50 - 00:05:30)
My Brother, Where Art Thou? - S3-E5
Continuity mistake: When Dan come in and knocks J.D to the floor, the front door is wide open. But when Turk joins the dog pile the front door is closed. (00:02:05)
Answer: No, it was a fake, they used a stamp.
It is real.