"Six Sigma is a process-focused methodology designed to improve business performance through improving specific areas of a strategic business processes."
Well, actually it just means that a 'six sigma' organisation will strive to please all its customers (or technically 99.9997% of them) rather than just most of them (50.0001%).
The stupid 'six sigma' buzzword comes from the fact that 6 times the standard deviation (sigma) of a normal distribution curve pretty well represents the extreme limits of that curve. But any company spending resources to achieve 'six sigma' results would need to explain why 'three sigma' (or 99.73%) wasn't entirely sufficient....
But a handy spoof w@nkword to toss (sorry) in to conversation: "To attempt to achieve six sigma results would yield an adverse profit stream due to nugatory infrastuctural investment requirements. We can achieve three sigma results without such exposure risk whilst maintaining our customers' performance expectations"
Or "FFF's stop pi$$ing money away on worthless cr@p when we can do just as well as we are!"
Which is what we should have said to the IiP bull****, for example!