The context of the following conversation is After forgetting to set an alarm, Lee was late to work.:
Lee says I can't believe I am so late this morning..
The friend responds What happened to you, you are never late..
Lee responds I was so tired last night, I forgot to set my alarm..
The friend responds Well, it Is the best of us. There's always a first time..
Lee responds I guess I'm getting old and forgetful..
The friend responds No, you are just stressed.