I feel like I want to spill soda on this lady.
What makes you want to spill soda on her?
She was so rude when she cut in my way when I was in supermarket.
I understand why you're annoyed, but spilling soda on this woman isn't going to solve anything and it's incredibly rude. You should just forget about the rude lady and move on with your life.
She has to understand that she's not the queen around the world.
I don't think confronting her in a petty way will solve that issue. I really think you should just move on.