"Lennie!, Lennie , for god's sakes don't drink so much!"
"Guys like us, that work on ranches [...] but not us."
"Tell me--like you done before."
"No, he ain't , but he's sure a hell of a good worker . Strong as a bull"
"He ain't much of a talker , is he?"
"shes pretty George"
"Shes a rat trap/ jail bait/ poison"
In this scene, Lennie was laughing while Curley was being serious and talking badly. Culry mistakenly thought that Lennie was laughing at him. He started a fight with Lennie and Lennie then fought back. This resulted in Lennie crushing Curley's hand.