What annoys you the most?

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As we go on our day to day business, we find things that annoy us... For example, I stopped in at WaWa to pick up a cup of coffee... This lady must've walked in after me & decides to ask me where things were as if I worked there... Told her I didn't but didn't make a difference to her... I was wondering if there's anything that either bothers/annoys you or just flat out pisses you off... Any comments, opinions on this?