Nedder

Nedder is a word commonly used in place of the word "Never" used as a retort when somebody says or does something funny, inappropriate, or just downright churlish. Close cousins of this word sharing the same roots are "Neddy", "Schnedder", and "Schneddy" all of which have the same meaning.

*When your friend is looking at a girl's butt* "Nedder"!