Translate this please!

[pinggoy]

Hello guys! My friend sent me a message in spanish and i don't even know the meaning of her message:

Que mierdaa dices maricommm echate un maroomo que tede bati banna de la buena chaval

does her message mean bad or good?

I am desperate in need of your help!

Your reply will be very much appreciated!

[wrholt]

The message is informal and contains some words that seem to be either slang or, um, colorful. Some words are not written using standard spelling, and it's missing some punctuation.

As there is a certain amount of regional variation in slang and other word meanings, it may help us give you a more accurate translation if you can tell us where your friend is from.