"I had bun on the glides"

I got off work a little early today, because the teacher I was working for had 6th period prep.  Since we had some extra daylight time I decided to drive across town to one of our favorite parks.  We went for a run and then I let Graesen play.  As we were leaving Graesen said, "I had bun on the glides."  Translation: "I had fun on the slide."  Graesen can't make the "f" sound or the "s" sound :)  Hopefully he will figure out those sounds someday.