1- Verbal reaction to an unpredictable, unfavorable, or ironic event.
2- An occurrence, result, or circumstance notable for it's unfavorable results.
3- A title given to something or someone with behavoir that is consistently contradictory, akward, and unproductive.
2- "You stubbed your toe? How Naughlker."
3- That guy is always dopping things and stubbing his toe. He's a naughlker-bib.