It didn't help that I started to laugh somewhat uncontrollably.
Also noteworthy was the fact that I read him Fix-It Duck. His job was to say that sight word "the" every time we came to it. He was moderately successful. His other job was to shout out the words, "FIX IT DUCK!" whenever we came to that part of the story.
He was doing very well with that part. That is, until the time when he became a little tongue-tied and replaced the all important D in duck with an F. He screamed loudly, "FIX IT %^#*!"
Have I mentioned that the people staying with us are in ministry? I'm sure it was startling when a four-year-old shouting the worst of all bad words echoed down through the ventilation system.