Elijah Wood: Speaking of game-making, what was the name of the fake game that you all tried to get me into? 
Dom Monaghan: Oh! Tig! Tag? Tig?
Elijah Wood: Tig!
Billy Boyd: In Tig, uh, it was when we were filming Weathertop, and myself and Dom… just started tigging each other, you know? Just, sort of, “Tig. Tig. Tig.” For no reason! And then Sean came over— 
Sean Astin: Slightly different from Tag. 
Billy Boyd: And he came over, and started doing it, as well! And then we’d say, “Tig-tig. Tig-tag,” Like, for no reason. And then Elijah came over and said, “What’re you guys doing?” And we said, “Oh, we’re playing a game called Tig.” And he says, “How do you play?” And we spent the next… two hours, making up rules! 
Elijah Wood: And trying to teach me, and of course I was getting everything wrong! 
Sean Astin: You couldn’t follow the game, and the three of us were forever frustrated that he wasn’t following these new rules that we were continuing to make up! 
Dominic Monaghan: So, we would play— the three of us were constantly getting it right, and every time Elijah tried a new way of tigging someone, we’d say, “No, Elijah, you can’t tig on a tog! You can’t tag on a tig. You have to do an elephant impression if you’re going to tig Billy. If Billy’s gonna tig you back, you have to get on your knees and take your trousers down…” 
Billy Boyd: “How many times, Elijah, you can’t double-tig a tag!”  

Notes