sicky

sicky

slang Of or related to vomiting and nausea. The poor child must have picked up some kind of sicky bug from day care. I had a bit of a sicky tummy after eating there last night, so I don't think I would go back.
Farlex Dictionary of Idioms.

sicky

n. someone who seems mentally deranged. Some sicky drew these obscene pictures on the wall.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • the pukes
  • slug bug
  • bug nut
  • bug off
  • Bug off!
  • crazy as a betsy bug
  • pukey
  • pukish
  • pukoid
References in periodicals archive
Colleagues theorise this very un-British failure to abuse the chance of a sicky is the result of over-exposure to the Teutonic efficiency of his masters.