He was on a stage walking around with a microphone and he said "My opponent thinks Social Security is some kind Government Program" and their was 3 or 4 seconds of complete silence and he didn't even realize he screwed up, he just grinned and moved on, Gore used it against by saying "Well DUH!"
One of the only times Al Gore had one up on GWB
How so?
Because it is so simple and direct, so unsophisticated? So accurate?