A man walks into a hardware store to buy a file

A man walked into a hardware store to buy a metal file. The clerk asks him which one he wants and he says "that flat bastard right there." The clerk gets angry and says that she will not be talked to like that and calls the owner to deal with the unruly customer. The owner comes down and explains that a flat bastard is a type of file and the customer meant no disrespect. The clerk apologized and sold the file to the man. Another man walks into the store asking for a file. The clerk points up and asks if he would like a flat bastard. The man says "no thank you but you can give me that round mother fucker right there"