I'm going to tell a cashier he's acting like a little b*tch
Why do you want to say that about the cashier?
I'm tired of dealing with his bad moods.
Take a deep breath and think that out before reacting. Using curse words on someone is really unneeded most of the time.
I'm sick of being wishy-washy about this.
Insulting someone can not only get you kicked out of the store, but it can really ruin someone's day. They may be acting rude, but you don't know how bad their day is going. Give them the benefit of the doubt and walk away.