Neltonic 

Used to descibe anything uncool, distasteful or stupid. It is an antonym of the word Eltonic. Believed to be first used by an all girls' school in England.

Yeah that is so neltonic

Neltonic by The Mighty Pozza October 19, 2010

Neptonic 

Inept+onic

Self destructive & child like behavior
Emotional acidity

*Historical context*
Caligula's troops refused to sail to Britain.

So in a fit he made them wage war against the sea & take sea shells before returning to Rome.

“Jerry! Quite being a Neptonic a$$! You’re cut off!”

Neptonic by BenJamin1223 January 6, 2024