Often used in conjunction with the phrase "It Worked For Me", this is a disclaimer saying: "This is what I did, it worked for me, but I don't guarantee it will work the same if you try it."
Old TV commercials said "The foo gets billions of miles to the gallon" then in fine print at the bottom of the screen added "Your Milage May Vary". In NewZealand we use the MetricSystem, so please don't tell us how many miles you get to the gallon. We prefer to know how many kilometres you can get from 10L, even if YKm/LMV doesn't have the same ring to it.
Commonly abbreviated as YMMV.
2 pages link to YourMileageMayVary: