I don't know the context and I don't know what it says and in fact I don't want to. The reality could never be better than what it looks like:
The narration says something to the effect of "Later that evening, Batman and Robin leave after putting on the clothes of two transvestites." So, y'know, exactly what it looks like.
Robin's speech bubble is something like "I haven't had this much fun since I was at school", which is somewhat less expected.
Translated with the aid of Google Translate, three mostly-forgotten years of Italian in high school, and the strong similarities between Spanish and Italian