We learned the true meaning of this phrase one fine day on board. The new Ensign (butter bar to you ground pounders) told the ET Master Chief that the Master Chief didn't know how the radar worked. ETMCPO Normandin had literally written the A-school course book on the subject! We dogged the hatch to the radar room they were in, and the Master Chief proceeded to lecture the young officer on the error of his ways. Five minutes later, when all was quiet, we undogged the hatch. Yes, a man can turn white. Amazing the youngster could still walk after that a**-chewing.