What does pasa algo mean?

"Pasa algo" in Spanish means "something is happening" or "something's going on". It's a very common phrase used in informal settings to indicate that something unusual or noteworthy is taking place.

Here are some examples of how you might use it:

* "Pasa algo? Tienes cara de preocupación." (Something's happening? You look worried.)

* "No, no pasa nada. Todo está bien." (No, nothing is happening. Everything is fine.)

* "Hay mucho ruido afuera, ¿pasa algo?" (There's a lot of noise outside, is something happening?)

The literal translation of "pasa algo" is "something passes," but in this context, it's used to mean "something is happening" or "something is going on".