Sam has a beer. We see that Sam and Buck have had more beer. Chuck and some business associates have drinks in a bar. Later, he orders a martini while Buck orders a rum and Coke. Beverly and others have wine with dinner.
People have champagne at a wedding reception.
Sam makes the gesture for male masturbation with his hand. Charlie then tells Buck to leave. Beverly shows a little bit of cleavage. Sam then wakes up and angrily asks what he's doing. Charlie returns to Buck's motel room under the condition that one night with him will mean that Buck will leave him alone forever.