Replying to My job sucks

I work at a supermarket, and today was just one of those days. Someone ran out without paying like 100 dollars worth of groceries and evryone made fun of me, like h"ow did they manage to get away" "maybe you should have jumped on him, he probably would have liked that" and all this mean stuff, im also extremely weak, and i cannot lift cases of water, and i always get made fun of. and i had all these live lobsters i had to ring through today and there legs were like sticking out of the bag, so basically no one at my job takes me seriously and thinks im a huge slutty ditz which im not at all. its just annoying. sorry i just needed to vent