If the OP didn't feel like the discussion was over when you guys started spamming, then it wasn't over. You don't get to decide when a thread is at a point where posting irrelevance is okay.
And I don't think you get the fact that I don't like people locking their own threads. I just happen to hate people who spam up someone else's thread with their own inside jokes and useless posts more.
Okay, you win this round.
[Image: http://media.tumblr.com/tumblr_m2os61J9jB1qdn352.gif]
But it still doesn't change the fact that I think the rule needs to be redefined.