The original version of this video, available on YouTube, has one or two moments that may not make it very classroom or child-friendly. So I have made a "clean" version of it - but left it unlisted and am instead offering it for free here. This isn't something I always intend on doing, but in this case I felt rather compelled.
If you're unaware of what joke could possibly be that bad... did you know vaseline glows under blacklight?