A bitch is a female dog. A dog barks. Bark is part of a tree. A tree is part of nature and nature is beautiful so thanks for the compliment.

A douche bag is a hygienic product for the vagina. The vagina is part of a female and females are beautiful so thanks for the compliment.

A shit head is a person who has shit on their head. Shit is the excrement that comes from the anus. The anus is a restricting muscle that controls the output of the rectum. The rectum is part of the alimentary canal. The alimentary regulates toxins and indigestibles in the human body. The alimentary canal saves lives, so thanks for the compliment.

An underachiever accomplishes things that are way below the common capabilities of a normal person. Negative absolute temperature is a temperate that is below the measure of absolute zero. Absolute zero is the temperature at which all molecular activity stops. Absolute zero has never been achieved in a laboratory setting so thanks for the compliment.

A slut is a person who trades sexual pleasure for monetary value. Monetary value assigns a value to objects in money terms usually using paper currency. United States paper currency often has traces of cocaine on it. Cocaine is a very expensive drug. Expensive drugs are only bought by the rich or by addicts so thanks for the compliment.

A nobody is clearly (not) somebody. A somebody is any average person. In a democracy any average person can run for President. The President is the leader of the free world so thanks for the compliment.

A dillweed? What’s that? Thanks for the compliment?