I lost a very important game once to a clock smasher. I should have complained about it.
A question about tournament rules.

Telestu, Don't they also have to announce that they are adjusting a piece before touching it? (I've never played against a human).

As I said, I've never played a human, but dramatic, aggressive "clock-slapping" (smashing?) is prominently featured in movies like "Searching for Bobby Fischer". Perhaps this is where people get the idea it is ok or even expected.
I need to read the official rules and articles on OTB etiquette.

It is forbidden to distract or annoy the opponent in any manner whatsoever. This includes unreasonable claims, unreasonable offers of a draw or the introduction of a source of noise into the playing area.
Can I call this rule on that person who adjust every single piece after every single move or smashes the clock?