WARNING: This isn't something you'd want to play around your children.

During a recent appearance on the "Cipha Sounds and Rosenberg" radio program, rapper Lil Jon taught us two very important lessons:

1. If you're ever in doubt about Sesame Street's word for the day, it's okay to say "I don't know."
2. The theme song will always be entertaining -- even if you have to throw in a few choice expletives of your own.