That's just 1/2 of a peace sign!
In England it is used as a derogatory term for someone of Irish descent.M I C K? What's wrong with that? Maybe I'm naive. I'm not in 9th grade anymore when I knew all the bad words. That wasn't on my list then. However, Mr. Jagger and his Rolling Rocks -- no, wait, that was beer -- Rolling Stones, that was it. They were quite popular.
I've never heard it. I was surprised to learn that "paddy-wagon" (police transport vehicle) was also an Irish slur. I thought paddy referred to the padlock on in. I guess almost anything can be derogatory, depending on how it's used. (See post #45 above).Also in America.