Don't step on his toes (or tent, as the case may be) if you don't want your nose smashed in.
Daniel: I wouldn't do that. He's a Suthie and will, if provoked, Suthie you up, and not in a good way.
Alternate example: What's that on your face? Is that a Suthie?
Joe: Yes, my eye has been Suthied up.