I'm a passive aggressive barista
That's unusual to hear. How did you become a passive aggressive barista?
I make snide comments to my customers all the time and sometimes I mess up their orders on purpose.
Customer service jobs are hard. But being passive aggressive to your customers isn't a good idea. You could get fired if people complain.
They love me.
Even if you think they love you, your intentions of being a barista is wrong, and you have malice with what you do for being a service person and it shouldn't be the way you work with people. I suggest you work hard to get correct orders and treat your customers nicely and with respect.