Well, a variation - you've just explained the rules to a new player - and then another new player joins and you have to explain them all over again.
Yes! I really hate when you've explained a complicated game, then right as you are about to start someone comes over and says, "Can I join?" I don't have an issue really with what you are saying Philip, only because sometimes it's a little hard to grasp a game until you start playing. How I teach a game: -Always start by explaining the goal of the game. -Focus on the core things people need to know to start playing. -As you explain, hand people cards to shuffle or give other simple set-up tasks. This keeps them engaged. -Use the first round to stop and explain the other parts of the game. As people start playing, it's easier to then go "here are what these cards that you can buy mean" than laying it all out before they have any real context.
My #1 pet peeve - people interrupting us while we're playing a game and then just standing around trying to talk. Very rude. Also, never had this before, but at Bryce Con, multiple times people came by while we were in the middle of a game and said, "We're starting up Game X in the next room, do you want to join?" Uh, we're playing a game RIGHT NOW. wtf?
When there are new players in a game, I tell them what I'm doing and why I'm doing, not caring that I'm jeopardizing my score.
It's not so much the explaining that bothers me. It's when I go through all the steps, explain the point of the game, explain what I'm doing each step and then halfway through the game they're still asking "what is the premise of the game?" Where it's not having trouble grasping the concept, it's them actively not learning the game. Or worse, not listening while I'm explaining the rules and then being confused when it's their turn.