I NEED AN ANSWER FAST (WILL REWARD BRAINLIEST)

What's the joke?

Kiki: Ain't nobody gonna look like a fool. Me, I'm just gonna walk in there like the lady I am.

Floyd: Hold up. Y'all smell that?

Kiki: Excuse me.

Dani: Oh!

(Like, what was the joke, why did she say "Excuse me" and "Oh!"