Non capisco

I read the following: Wenn sie was machen möchten sollen sie doch kommen, Mäuerle Am Gräble oder (dreckballen?) kleinmachen.

“if they want to do something they can come and demolish the small wall at the grave or the (big dirt chunks?).”

Looks like a scribled note where the ink was pushed through ending up on the napkin.

Nothing to get, a lot to ignore.