On the one hand, I've been in situations where dickheads would undermine me behind my back to management, tell me other people were undermining me, act like I was I a dickhead if I responded to a direct question from management directly instead of clearing it through them.

On the other hand, the dickhead always thinks he's a non-dickhead.

If everyone you meet is a dickhead, you're the dickhead.

So be kind to everybody, dickhead or non-dickhead.