20 items or less

I find it sooooo annoying when people get in the express line at the grocery store but have more than 20 items. The other day, I ran to the store really quick during my lunch hour to grab something and got stuck behind some woman who apparently thought that 20 items meant 20 big items with several smaller items thrown in the mix. And to make matters worse, she then had the never to pull out an advertisement for another store to have the checker match those prices. Hello??? Could she not see that I only had three things in my hand and was obviously in a hurry? I really wish that people like that woman would be force to pay some kind of fine for intentional misuse of the express line.