a gentleman's
A gentleman is a man who’s got more class than a donut shop and doesn’t even know it. He talks nicely, wears good clothes, and doesn’t need a bunch of people telling him he’s cool.
He wore a suit and talked like he knew what he was doing, that’s a gentleman.
He didn’t need anyone telling him he was cool, he just was.
He walked in, dressed nicely, that’s a gentleman.