Change FBSM to a more reliable acronym

Sometimes a fbsm is just a five minute rub with extras.
Sometimes a fbsm is a good back rub with extras.
Now and then, mostly then, a fbsm is a bona fide head to toe pro massage with extras or without extras.

Could be define fbsms as fbsmo, fbsm1, fbsm2 and fbsm3...the higher the number, the better the massage?

Already taken care of. That's what the "L" series is used for. Though sometimes the extras are themselves provide as acronyms.