Wet bibs and raspberries

Ok, here’s the deal. I should be able to whistle, right? As the lady once said, “You know how to whistle; you just put your lips together and blow.” Well, when I do that I get no whistles, only raspberries. Daddy thinks I’m making car motor sounds, but I’m trying to whistle. It looks so easy, but I’m doing it wrong. Look at my bib. When other people whistle they don’t wind up in their own spit shower. I thought that maybe once I had teeth the whistles would come, but I have two teeth now and no whistles. Benji also started trying to whistle recently, and his results are the same.