I had a great time with this one. It's one of those where the humour just keeps landing, especially with how the costume clashes and identity mix-ups play out. Those running jokes don't feel forced – they build naturally and get funnier as the episode goes on.
What stood out most to me was Sheldon. Jim Parsons takes the nerdiness up another level here, and moments like his overly detailed explanations just make it even better rather than repetitive.
I also liked how the episode balances visual humour with character-driven comedy. It's not doing anything complex, but it knows exactly what it's doing – and it works.
8/10: a really fun, highly rewatchable episode.