I took a class w/ a guy (professor) that was British proper. He had trouble saying some things, because their different colloquialisms & such...You mean like when they call a pack of cigarettes "fags"?Yeah.
He kept saying "pop-stud" & nobody knew what he was talking about, until someone that knew, said a pop-stud is a snap. Like a snap on your Jeans. (snap-on buttons)
I'm still waiting on an answer to the article of clothing question above. Fi - Fi - Fo - Fum, I await the answer of an Englishman...