Apart from silly things that people say about horsemanship in general (because there have been LOTS of threads about that), I dislike when people, both horsey and non-horsey, sometimes say that:
* My horse is "nothing special" (oh please, just because he didn't cost thousands and thousands, and because we don't do high level competitions, gives you no rights to evaluate my horse as a "nothingspecial" )
* He's fat (apparently, you've been looking just at your trotters and purebreds, and forgot to educate yourself about the typical conformation of carriage horses and drafts)
I usually don't let these things get to me, because I know they're just not true.
I have come a long way, to surrender my shadow to the shadow of my horse.