Dilbert: Would you like to take a long walk with me at lunch to get some exercise?
Tina: That's a great idea!
Dilbert: Okay, I'll come get you at noon. Ready?
Tina: Yes, I only need ten minutes to finish this.
Dilbert: I only have an hour for lunch, and your ten minutes will turn into twenty.
Tina: That's okay because I wore heels today and I can't walk more than a block anyway.
Dilbert: Why did you agree to take a long walk if you couldn't take a long walk?
Tina: Because I was planning to walk to the store on the corner to do an errand anyway.
Dilbert: You've ruined my walk!
Tina: Just give me forty minutes to wrap this up.