Do you think this is mean?

i hope so...a women at work posted a peice of paper that says "if you are irratable, grouchy or just plain mean, there is a $10 fee for putting up with you" so tomorrow i'm retaliating by puttin one up that says "if you're stupid, stupid or just plain stupid there is a $50 fee for putting up with you". childish i know, but i really just wanna piss her off. long story, but this is the jist.