Okay, we better start up another rant before this thread gets too muffin'd.
Have you ever met a person who likes to judge people in order to make themselves feel better?
Or how about a person who, whenever they're sick, behaves likes the meanest person in the world? You know, taking they're anger out on everyone else. (Okay, I can sort of understand this one; I do realize that it is hard for some people to behave maturely when they feel so rotten).
Combine those two, and you've got what I've had to put up with from someone all day today.