Is AUTHOR wrong in the post ? POST : There is some back story to it. Im an expo and I work with all males in a kitchen. I come in early and set up the line and get whatever we need for the day besides on my 2 days off. My coworker comes in at 12 and just had 3 days off because he "needs" it. Well hes always trying to tell me HOW to cut the things we need and how to wrap the stuff we need always with a heavy attitude like I have been doing it wrong, even though im the only one who does prep for our work station. Anything I say too , he sees it and tries to 1 up me. I told someone else I speak a little bit on spanish and he comes up and starts telling us about how he had a massive road trip with his friends to Mexico. He is also currently "hanging out" with a front of house manager that dosent like me and has treated me differently than him in the past.

On to the part where I walked out. Im doing my job at first alone as always. It gets busier at the hour he comes in and we are now in a rush. I accidently sent out a plate that had sweet potato fries instead of regular fries and he just starts telling the server its my fault like he always does. I didnt care becuase it was that time but I overhear him blame other stuff on me when im right around the corner all the time. He just starts counteracting almost everything I say because I guess he came in on a bad mood ? I started plating another tray and he starts getting mad at me because he said to start on the ticket thats first... but I was on the next ticket and while i was trying to explain what simple shit I was doing, I just got so frustrated and went to the back to prep since he thinks he can do it all himself. Well. 5 minutes go by and he starts shouting at the top of his lungs my name because he needs me out there. While im back there crying/prepping, i had to go back out there and help him JUST FOR THE SAKE of the whole dining room. I only did it to not mess up service anymore. I know what I did was wrong to innocent customers, getting their food out later and what not but I just cant take this guy treating me like this anymore. I try my best at my job and i tried my best working with him but i cant go everyday with him belittling me and we have already had a talk with the boss about his behavior towards not just me but also other coworkers since he always mumbles under his breath how slow they are. Tbh i dont think my other coworkers are slow, he is just impatient and dosent want to look bad to the servers since most of them are girls i guess. Idk. AITA ? 

P.s. I did get a talk from my boss that it did mess up the line when I did that. I knew that when it happened, i just didnt care at the time, he put me in tears at that point. 

TLDR . My coworker is a douche to me because I think he wants to be seen as the main expo or the "good" one or something ?? Idk hes really rude to me and my coworkers so i walked out during service during a busy time and he got screwed.