I'm confused with this sentence!
"Nobody on earth better mess with her"
can you please give me the meaning of that?
thank you for your help!
Mess with her = try to become friendly with her; try to hit on her; try to take her away from me; try to engage her in sexual activities; try to cause her any harm ... The context should make clear what is meant.
better: This is the difficult part.
I better go = I should go.
You better shut up! = I advise you to keep quiet.
It possibly derives from "It would be better if ...", but the meaning is usually stronger than this.
"Nobody on earth better mess with her" = I would advise everybody to keep away from her.