SpongeBob SquarePants

Anchor Arms

on ESB
Anchor Arms
Donald the Shark wearing the Anchor Arms
Type: Product
First appearance: "MuscleBob BuffPants"
Latest appearance: Battle for Bikini Bottom
List of objects

The Anchor Arms are a pair of inflatable, rubber fake biceps that SpongeBob wears on his arms in the episode, "MuscleBob BuffPants."


The Anchor Arms are what appear to be long, large balloons that worn in the arms like a glove, then it's inflated to form its "muscles".

The settings are as follows:

  • Normal
  • Strong
  • Veiny
  • Hairy (for the ladies)

The levels of air pressure are as follows:

  • Normal (Green)
  • Strong (Yellow)
  • Super (Orange)
  • Jerk (Red — Never inflate to this limit as it will cause over-inflation and damages the Anchor Arms. However, SpongeBob eventually blows them exceeding Jerk as he struggles when lifting his anchor, causing them to overstretch, explode and deflate)
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Role in the series

MuscleBob BuffPants

SpongeBob notices that he is very weak compared to Sandy and she offers to give him exercise training. After failing at it, SpongeBob goes home with painful arms. He lies in his arm, when a commercial on TV starts. Donald the Shark tells the audience why to buy the product. SpongeBob is then convinced and buys some. He goes to Goo Lagoon to show off his fake muscles. He convinces everyone, including Sandy. Thinking that he is really strong, she signs them up for an Anchor Toss competition. When it is SpongeBob's turn to go, the Anchor Arms' rubber started to stress due to SpongeBob over-inflated them into the Jerk size while struggling to lift the anchor (even the Arms can be seen over-stretching with its "veins" bulging out and causes the air to randomly blow SpongeBob's body). Eventually, they explode and deflate, revealing that his muscles are just fake, to Sandy's disappointment.

Battle for Bikini Bottom

A variant of the anchor arms is used to repair SpongeBot SteelPants, after the real SpongeBob temporarily destroys him. The difference that this particular Anchor Arms appear to be made of plastic, instead of rubber balloon as in the original.


  • It is a reference to part of an anchor called the "arm," which is the part that curves out from the bottom end of the main part and ends in the pointed part.
  • In the scene where the Anchor Arms blow up, it is then deflating in a similar manner as a rubber balloon — floating randomly as it loses air and making a characteristic noise.
    • This is probably an oversight (or possibly for comical effect) since the Arms actually exploded, thus it would be completely blown up instead of deflating. In addition, the destroyed remains of the fake arms indicate that the "hands" is the only part that exploded, which explain why it's deflating.
  • It is shown that SpongeBob appears to hide his real arms inside his body while using the Anchor Arms, as seen after the Arms get destroyed, he pops his arms out as Sandy looks at him.
  • The fact that the Anchor Arms are fragile and easily get damaged when misused, implies that they are just a novelty toy that is not designed for extreme use.

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