often it's the toughest fighters that need to tap to strikes when they can't go on, because their brain won't shut down, and they need to protect themselves. They need to tap (GSP against Serra), quit (Leben), or be taken out of the fight (nate diaz, bj penn). They are some of the toughest fighters. Tapping is part of the game. Laughing about it is childish and shows that you don't know what you are talking about.
I just got flashbacks of Maynard vs Diaz. Some people are just too tough for their own good.