Well, in my neighborhood (in the 1950s) LS/MFT meant "loose (bra) straps means floppy titties." YMMV.
Of course, I've actually smoked Lucky Strikes...Lucky Strike Greens. In the late 1960s, my detachment on Mindanao (PI) had emergency stores of WW II vintage C rations. Upon orders from the Det Commander, we opened those and consumed the contents (thereby making us eligible to get recently issued replacements).
9-cigarette packs of Lucky Strike Greens were among the cigarettes in those C rations (so were Humps (Camels), and I think, Old Golds or Pall Malls). But those 25+ year old cigarettes did not smoke like new ones...they were horrible.