Brummie slang gets underrated but it's absolute gold. The accent might divide opinion, but the expressions are proper bostin. Birmingham invented its own way of speaking and couldn't care less what anyone thinks.
"Clapped, it's a synonym for chopped, basically something or someone ugly, bad, or whatever. Basically unattractive. An example would be, oof, you're gonna wear that? That fit is clapped."
"Peak. In a stricter sense, it is a word to refer to something at the peak of its domain, the best of the best, but more current usage means that people mainly use it just to say that something is really, really unfortunate. Dude, did you see that new movie that came out, Project Hail Mary? Oh my god, yes, that shit was so peak!"