I work in the irrigation business, and we sell marking flags -- little 18" long straight wire with like a 4" x 3" piece of vinyl or something at the top. We also do custom flags once a year so that contractors can put their company name on them or whatever (waste of money). So one of our sales guys sends an e-mail for these custom jobs to me and our purchaser with the subject heading "Custom Fags". I lost it. Totally called him on it too. Hilarity ensued.