Possible interpretations:
* "Ey, que basaser": This could be a slang expression, but without context, it's difficult to determine its meaning.
* "Hey, what is the base?": This is a potential translation, but it's unlikely to be the intended meaning.
To provide a better interpretation, I need more context:
* Where did you hear this phrase?
* Who said it?
* What was the situation?
Please provide more information so I can help you understand the meaning.