Lisa: I have to clean the house.
Bob: Yes, it's very dirty.
Lisa: You can help me.
Bob: Why me?
Lisa: Because you helped make it dirty.
Bob: What do you want me to do?
Lisa: I want you to clean the bathroom.
Bob: Oh, that's easy.
Lisa: Clean the sink, the tub, the counter, and the toilet.
Bob: That's a lot of work.
Lisa: Tell me when you finish.
Bob: I don't think so. You'll just give me more work. 
Bob is going to help Lisa clean the house, he will clean the bathroom. 