This type of riddle is a huge hit on social media. It’s often presented with a picture of several glasses containing different objects (e.g., a paperclip, scissors, an eraser, or a key). The text promises an in-depth psychological analysis of your personality, depending on which glass you choose.

In reality, this riddle has nothing to do with whether you’re a “giver” or a “taker.” It’s purely a physics and logic problem based on Archimedes’ principle.

🔬 The physical solution
To find out which glass actually contains the most water, we need to consider the volume of the objects inside:

Every object immersed in a liquid displaces an amount of liquid equal to its own volume.

If the water level is the same in all the glasses, it means that the most water remains in the glass containing the smallest object (the object with the smallest volume).

In typical depictions of this image, the smallest object is usually a paperclip. It displaces the least water, so the liquid itself remains in that glass the most.

🧠 Why do such texts work?

Signs like “Your answer reveals who you are…” utilize the so-called Barnum effect (or Forer effect). This is a psychological phenomenon where people tend to find vague, general, and universal descriptions of their personality to be a perfect fit for themselves.

Such posts have one goal: to pique your interest, evoke emotions, and prompt you to comment or share the post.

So, if you want to know the right answer, look for the glass with the smallest and thinnest object. And as for your character—it reveals your true behavior in everyday life far better than the choice of glass.