Gabbai to the newcomer: Kohen? no, Levi? no, shishi.
I was once asked by a gabbai mumbling: kohen? Me:no. levi? no. isroel?
He probably did this automatically just to finish the list, but the question sounds offensive – is he suspecting me of being a mamzer or an akum?!
So, I answered “no” just to look at his face. Hope he was more careful after this.