How do you answer when a stranger asks about MPG?

Seance starting full time 4 years ago I have talked to many about what kind of millage I get they tell you theirs gets better millage than that. So I just figure. The first lair doesn't stand a chance. I tell them I have gotten as good as 10.2 and as bad as 4.5. The other thing I have told some is when I use my Toad which is a Jeep JK to push the MH down the road I get great MPG on the MH but the MPG on the Jeep sucks. This seams to make them try and think of a way to top that.