My biggest issue is when I accidentally horsebump somebody and they kill my horse on purpose. "LOL YOU SHOULD HAVE WATCHED WHERE YOU'RE GOING my old friend" is not a proper response to "I'm sorry, I didn't mean to cav-bump you, but I was running from Gaga's lance of doom with my palfrey when it has nearly no health left."
If it's not obvious, NA guy here. I don't know what the situation is on EU, because I try not to play there due to horribad lag.
If I cav-bump out of spawn, rape the shit out of my horse, I probably deserve it, but if I'm trying to cav-bump an enemy for you, or lance a tin-can when you're a peasant, I'd appreciate a modicum of civility. I'm not a heavy Cav, I'm Light Cav, My horse can't take five arrows to the flank and live.