Not to over explain the joke, but basically the idea is, sometimes you have something you don’t really want to do. So, in order to convince yourself to do it, you sing a little song of encouragement.
So, for example, if you have to take a shower and you don’t really want to, you might sing something like, “It’s time for Dr. Show Show to take a showey-show! It’s time for Dr. Show Show to take a showey-show!”
Well, it probably makes more sense if you listen to it:
(Sorry about the low audio, that’s right off of Myq’s website, not my fault!)
Ah HA! Now you’re hooked too! You also will be breaking into these little songs throughout the day. Make sure you do it around Sara, because it drives her CRAZY!