Sorry mate, you can't come in.
What?
Sorry mate, we have a very strict dress code here, and you can't come in.
But i'm wearing a suit.
That's right. It's smart casual night, and you're wearing a suit, so you can't come in.
But I came here on Monday night and I was wearing exactly the same clothes.
Monday night was formal night ,sir. On formal night you have to wear a suit.
Yeah, tonight is smart casual night, and you you have to wear smart casual clothes.
How ridiculous. I'm not coming here again.