if you pay with MPC! (Military payment currency) "You boom-boom my sister? She numbah one boom-boom, only five dollar MPC. You like!" At Hi-Vahn Pass, outside of Da-Nang, we always knew when we were going to get hit, the boom-boom girls wouldn't show up. I knew one guy who spent time in the stockade for trading a whole pallet of C-Rations he was in charge of for boom-boom over a period of about a week or two. That's what I need, some numbah one boom-boom.