To understand what it means, you need the rest of the sentence. Here are some possibilities:
* "Tu bouges comme un robot": You move like a robot.
* "Tu bouges comme une danseuse": You move like a dancer.
* "Tu bouges comme un chat": You move like a cat.
* "Tu bouges comme un ours": You move like a bear.
The meaning depends entirely on what comes after "comme".
To get a proper translation, please provide the full sentence.