Two I can think of from the the top of my head, but one was more oughties than now. “He’s got nothing to beat me with.” “There are levels to this game.” I know there are more?
Anything having to do with "marinating" a fight. I always see that as code for "I don't want to fight this guy"
Agree with "I don't know who so an so is" "I've never heard of him" "That fight doesn't make sense right now"