USMC stands for:
yoU Suckers Miss Christmas,
University Science Music Culture
(I actually used that at a CDMA training session) all these ITT grads while introducing themselves and stating ITT class of whatever, so I stood up and said University of Science Music and Culture class of 76 Parris Island Campus, the guy with me lost it and the instructor was clueless.
Uncle Sam’s Misguided Children.
Utter S*** and Mass Confusion.