On Bootyliciousness, jelly, jealousy

This came on the iPod, and I wondered whether the chorus goes: "I don't think you're ready for this jelly" (I have jelly you may not be prepared for) or "I don't think you're ready for this. Jeally?" (You lack preparation for "this", and are jealous of it).

A typical contemplation for me during a long drive. Don't look up the answer on any CD booklet lyrics you have, or, heaven forfend, any of those sloppy song lyrics websites. Ponder this as a koan.