Sort by time | Sort by thread (beta)

Link to this comment:

Share to:

All Comments (5)

Sign In or Sign Up now to post a comment!

  • Great series, Dr Dave! I know someone with a herniated disc. I'll have to buy him a dozen jelly donuts ... and give him your ph number. :-)

    UsuallyRightReverend 2 years ago

  • Makes it easy to understand.

    The007Parker 2 years ago

  • Great job! This made it easy to understand. I loved when the jelly squirted out.

    snowbords1 2 years ago

  • Great illustration ... love the cause and effect.

    annie17567 2 years ago

  • Great analogy!!

    bmurlatt 2 years ago

Loading...
Alert icon
0 / 00Unsaved Playlist Return to active list
    1. Your queue is empty. Add videos to your queue using this button:
      or sign in to load a different list.
    Loading...Loading...Saving...
    • Clear all videos from this list
    • Learn more