later(s)

Definitions

Slang

  • exclamation an all-purpose farewell. An abbreviation of the standard ‘see you/catch you later’, probably originating in US speech but heard among UK teenagers in the 1990s.
  • exclamation a threat to be carried out in future, as implied by statements such as ‘I’ll see you/deal with you/get you later’
http://www.dictionarycentral.com/definition/later-s.html