The context of the following conversation is The garage needed to be cleaned out to have a sale. Jan played a part in this process of getting it cleaned up.:
Jan says Oh boy am I tired..
The friend responds Why are you so tired?.
Jan responds I was cleaning out the garage all day, and I did not realize the amount of stuff in there.
The friend responds Doing some spring cleaning?.
Jan responds Kind of, we're doing a garage sale for my church tomorrow, so I'm deciding what I should get rid of.
The friend responds What a great idea, killing two birds with one stone.