The hilarious YouTube duo Rhett and Link decided to "review" Finger Sporks on an episode of Good Mythical Morning! The whole episode is really funny, but the Finger Sporks bit starts about 7 minutes in. You can watch below. Scroll down just see their Finger Sporks song/video.
Using Fingers Sporks on your "booty knot" is not an approved use. However, it is very funny.