Quote Originally Posted by bjsaust
Exactly the spot where "I had a pair!" fits. It all depends on image, like you say I'm not going to insult someone who thinks I'm decent by pretending otherwise, but if he's convinced I'm a donkey I'm happy to reinforce that.
"I had a pair!" is also a bit condescending. It's mostly a joke that is funny for the other people at the table. It's way better than my idiotic comment though.

I think this was one of those spots where you should say absolutely nothing. A weak player has lost money and he thinks it's because his opponent played bad and he is probably tilted. The situation is already optimal.