How would Sasuke react to a surprise party?

Sasuke would most likely give a "I'm too cool for this" look and just walk away with out thanking his friends. He also would probably have an excuse like "I could be training right now but you're all just wasting my time".

He would be thankful. Well he did change throughout the years.

I've thought about these things myself.According to my calculations, in any case,whether it's Sasuke o Neji, there will be three different phases of micro expression. They are as follows:

Suprised

He's actually surprised but trying to not express his feeling in front of everyone. Maybe.

He would put his hands on his hips and turn away and blush and say whatever...