Conk out
Speak as Rachel
Speak as Kyle
Kyle: Not very well.
Rachel: What's wrong?
Kyle: I'm just so tired today. I can barely keep my eyes open.
Rachel: Why are you so tired?
Kyle: I stayed up late last night to watch the World Cup on TV.
Rachel: How late did you stay up?
Kyle: I went to bed around 3 am.
Rachel: That's too late! Are you going to watch the World Cup again tonight?
Kyle: No way. I learned my lesson. I'm going to conk out the minute that I get home.
Rachel: That's good. Make sure that you don't conk out at your desk today. Our boss wouldn't like that.