So many stupid ones from various stable yards I worked on...
Screamed at in front of yard clients, other yard staff and students because...
I was walking back from the barn with 3 full haynets, not four. We were supposed to collect nets, and then take them to the barn then bring them back four at a time, soaked (no more than 4 as that was too heavy, couldn't use a wheely for I forget why reasons!)...
I had done all mine and only had three left because one horse was away at the vet hospital.
Apparently I wasn't to talk back to her and she wasn't interested in excuses.
Different yard - day one 'fetch in the chestnut mare in the top field'... chestnut mare standing at the gate so duly fetched.
'Are you BLOODY STUPID, THIS IS THE WRONG MARE...'
How I am to know that there are two chestnut mares in the field, and one is hiding with her gelding buddy under the trees in a blind spot... I do not know! They were both 16hh ish TB chestnut mares too, same shade, same white sock (ish one was about an inch higher than the other), same SIRE so half sisters... so even if they'd been stood together I'd have not known which she meant.
Horrible yard where I stayed only a month, because it was run by a brother and sister who basically hated each other but couldn't afford their own seperate yard, and had to share the one mummy and daddy owned or get real jobs...
So he'd give you one instruction and she'd give you an opposite one, and if anyone were to be in the wrong it would be the lowliest staff member.
I had no idea because I was interviewed and taken on by the yard manager who seemed nice... but was rarely there because they were the travelling person so they were often away.
Spent a week feeding one horse a particular combination of feeds, then boss A goes off to somewhere to buy horses and boss B comes back and rips shreds off me for feeding that combination and suggest some other combination...
Pass on shoeing details to the farrier, given by B and then after the fact A rips shreds off me because she wanted something different doing...
I found out VERY quickly why they had such a high staff turn over!