World’s Largest Elephant Toothpaste Experiment

World’s Largest Elephant Toothpaste Experiment

I’m not a chemist.
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Science Bob’s Elephant toothpaste recipe-

Here is Science Bob’s behind the scenes commentary:


0:00 – Marimba Idea – Blue Wednesday
0:15 – Arrow (Instrumental) – Andrew Applepie
1:08 – Dansez – Fasion
1:35 – Pata Pata – Miriam Makeba (Matt Cherne Remix)
2:25 – Dive – Lvly
3:49-6:40 – Dansez – Fasion
6:44 – Kalimba Jam – Blue Wednesday
8:16 – Salamanca – Sarah, the Illstrumentalist
9:47 – Kalimba Jam – Blue Wednesday
10:12 – Q – Blue Wednesday
11:06 – Too Happy to be cool by Notebreak

Summary: Elephant toothpaste (aka slime foam) has sort been done so many times I wanted to do it really big. We did a ton of testing.

They are soft-



I make videos like this once a month all year long while supplies last:





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65 Responses

  1. Mark Rober says:

    I never claimed to be a chemist. I’m finishing out 2019 real strong with some BIG videos so be sure to subscribe, bell, donate a kidney, etc.

  2. Hammad Ali says:

    I respect Mark for dedicating this video to Grant Thompson.
    RIP Grant

  3. Sweet Corn says:

    The “Dedicated to Grant Thompson” at the end gives me hope. Knowing that even though he is gone, but his legacy will stays on.

  4. Caleb Clifton says:

    That’s great for the Grant Memorial. I love your videos so much!

  5. Caleb Colasanti says:

    Look at the shirt he is wearing remind you of anyone (King of Random)

  6. Ender Gamer says:

    I have two ideas for videos
    bowling ball that makes you get a strike every time
    and a Giant calculator

    • drippingwax says:

      I would like to see the bowling ball. Put RFID tags in the pins.

    • Delta says:

      @Andrew Potter Then that wouldn’t really be a “strike”, it would more likely be a bowling ball “slurping” in all of the pins. If you really wanted to use magnets, having a strong magnet in the first pin with an opposing charge in the bowling ball would probably do the trick *only if the bowling ball could be the size of an ant lmao jk*

    • Anna Nimmous says:

      Andrew Potter that’d make the pins attract to the ball. The ball would need to be attracted to some other magnets, probably under the alley.

    • wil fid says:

      Put a rotating gyroscope in the ball to make it move and control it with a remote system

    • Mr. King says:

      Why giant calculator tho?

  7. Michael Draws says:

    Imagine if this guy was your science teacher.

  8. Nooby_Lemon says:

    Shows cow blood on camera: nothing

    Shows food coloring: “I’m about to get demonetized”

  9. Cresfirc Gaming says:

    Mark: **stays for almost half a year to make cool projects**
    Kids: I’m about to do what is called a pro-gamer move

  10. Dragix GD says:

    2017: Automatic bullseye moveing target
    2019: Worlds largest Elephant toothpaste experiment
    2069: Surfing at Neptune

  11. Dragix GD says:

    Bob: What should the experiment be?

    Mark: Yes

  12. Proxity 64 says:

    8:17 I love how the “woo” is synced to the bubble popping

  13. AᒪE᙭ツ says:

    Appreciate what you choose to wear. Grant was a really good guy he Impacted all our lives.

  14. Cermit says:

    2:44 No One:

    Starbucks New Flavors:

  15. imagap says:

    rip grant thompson he will be ascended in heaven, we will miss you 🙁

  16. ilikepancakes says:

    “the problem is, we over-achieved”
    *dj khaled*
    *suffering from success*

  17. Ovlydia Jaegar says:

    Mark Rober is basically like bill nye the science guy 2.0

  18. Daniel Sanchez says:

    “Dedicated to Grant Thompson”
    *Everyone liked that*

  19. Linklink Mario says:

    The kid in the back is literally flossing smh

  20. Christian Liles says:

    I love how he is wearing THE KING OF RANDOM shirt after Grant had passed away.

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