I have been pegged for 2 or even 3 inches taller than my height too many times to count[Around women or shorter men(Keep in mind I lived in a short area at the time)] and when I corrected them they are often surprised. I guess this is because there are so many 5'10" to 5'11" guys that claim 6'0" and somehow get away with it. Thus when the often-touted reference point of 6'0" is in itself skewed, things like this can happen.

To be fair this never happened when I lived in a taller region in the western US.