How do you react when someone is rude to you?

I would be shocked and appalled and walk away from that person

I can't be nice to someone that's being rude to me. That whole "be the better man" thing just seems too... if they wanna be rude, I won't insult myself by being nice to them. I'll say something like "and you, sir are being extremely stank ***" before putting my headphones on and walking away :)

I try to find out what makes them rude towards me,there is obviously a reason for it.

I just ignore it and pretend that what they are saying doesn't affect me. Obviously rude people are just looking for a reaction.

I compliment them in a sarcastic way

Bully: you're fat

Me: you are just sooooo fit...man I wish I could be you! You're so cool!

Mostly athletic boys make fun of me, so I tell their coaches ;)

be rude right back but in a nice way

try to keep my cool, ignore the rudeness, and deal with the underlying issue.

Take the high road: be twice as nice to them. It blows their mind.

I, with an expressionless face usually stare at them until they feel uncomfortable

Ignore them & or be rude back.

Sacrifice them.