Why do you think some people respond to some situations in a snide way? Do you feel as though they're trying to make themselves feel better at the expense of tearing down others? Is it due to a lack of confidence in themselves? Just plain selfishness or pig-headedness, the inability to listen, take in and contemplate an idea as stated by another person without having their own view drown out what's being said? What's at the heart of the person who can't reply without a quip or a crack?