Some times people need to take hikes.
They need to realize how they don't treat you nicely.
How they choose to be sharp and short and then nice because they need you.
You sometimes feel like you are not up to par with the rest of the world. Sooo you are nominated to be the one that people get snappy with .... because someone "thinks" you have an attitude. Or someone plays favorites unknowingly.
You wouldnt ever admit that.....it wouldn't make a very good impression would it? of course not.
Stay polite, be respectful, but don't linger any longer than you have to.