What does the reaction do?

Question

I don't understand when people say "he just want your reaction" why if its a bad reaction...I don't get it doesn't he want positive reaction? If you tell him don't do it and he does then you get mad...for example

Answer 1

The reaction always means a good reaction like a dream always means a good dream.

Answer 2

good reactions usualy lead to more actions bad ones dont
for every action there is a reaction