Telling the truth

We have to watch what we say to Matthew now.  I had the day off work today, but when Louise took Matthew to nursery this morning and he asked about me, she told him I was going to work.  He replied that I wasn't going to work, saying "Daddy has the day off "!  He then told Louise that she had the day off too, and she replied that she didn't.  He said "Yes, you're going to Home Bargains!"