People who joke about others but can't tolerate being joked about themselves are often referred to as "hypocrites" or "double standards." A hypocrite is someone who says or does one thing but expects others to follow a different standard. In this context, it means that they find it acceptable to make jokes about others but become upset or defensive when similar humor is directed towards them. This behavior is considered inconsistent and unfair as they are unwilling to apply the same treatment they dish out to others.