The fact, that except for C programmers, people count starting at the number one.
A few weeks ago I pointed out on a post on APUG that we have 11 months until the start of the next decade and so many dunderheads posted vulgar and disgusting responses the monitors had to delete all the posts related to the start of the decade. Some people are just so into their "stupidness" that they cannot turn on their brains.
Dunderheads, do you hear me now??