sometimes in coaching you see someone unlock potential that neither of you ever imagined. and then sometimes in coaching you're sitting on the mats with someone who is biting at the singular fake nail left on their hand until they accidentally inhale some of the nail glue and start coughing and spitting and then they get up, go over to the wall, pick a wedgie in front of everyone, give one of the worst goes on a climb you've ever seen and say, "no way that's not possible."