So this little old lady is working in a hardware store. She is dusting and cleaning and fussing. In walks a large workman wearing bib overalls and high-top boots.
She smiles “Can I help you?”
“Lady, I need to buy a file.”
She puts her hands together “Oh my – we have all sorts of files.” She turns and points to the array of tools. “We have these. And these. And these. . . . .”
“I really need a bastard file,” he says.
The old woman puts her hand to her mouth and runs to the manager. She glares sternly “that man used a bad word in front of me. He said he wanted a ‘bastard’ file.”
The manager smiled and said “it’s not a bad word. There are wood files and metal files and a ‘bastard’ file is actually a type of file for metalworking (this is true). Why not go back and sell him the file.”
So she did.
A few days later another big workman came in. He said “Ma’am, I need a file.”
She smiled. “Would you like this bastard here?”
“No” he thought. “I’ll take that SOB* over there. . . . ”
*This term is subject to personal preference.