What does the idiom 'go against the grain' mean?

Answer:
It just means to go against the way everyone else is doing things, as if you are sanding wood and sanding the wrong way instead of sanding with the grain. When you go against the grain, you irritate people.
First answer by Darksyde. Last edit by Darksyde. Contributor trust: 1167 [recommend contributor recommended]. Question popularity: 1 [recommend question].