(n.) An amalgamation of the words "who done it" into one word. The whodunnit is a mystery where a crime or wrongdoing (a tort, so to speak) must be solved. Used to describe plays or cinema for the most part.

When you eat dirt for the first time and leave your family to build a shack in the woods

1. A proclamation as to who did somthing. Usually used in terms of rednecked bewilderment and confusion.
2. A lesser known comment used in bewilderment by Toyota owners.

While doing a girl doggy style in front of a window, you have your buddy wait out of view. Mid stroke, tag your buddy in. Go to the window and a few minutes later pop up so the girl sees you, and then have your buddy donkey punch her. When she wakes up, she's like whodunnit?

1. A funny term for a mixed breed mutt dog of unknown origin.

2. A person or animal (usually dogs) to whom the identity of the father is unknown or uncertain.