At the last school I taught in, we had a PE teacher who would round up his kids on the field of play by shouting "OK, listen up, guys!" notwithstanding that there were both boys and girls in the group! I fell out, temporarily, with the same bloke when, as as a form teacher collating subject reports, I sent one back to him in which he had written, about one of the many kids who understandably lack enthusiasm for enforced sportiness, "This boy is completely disinterested in PE." The dispute went as far as the headteacher (ironically, a graduate in English from Cambridge University), who overruled me! Good times though...