barf

barf /barf/  [from mainstream slang meaning `vomit']
   1. interj.  Term of disgust.  This is the closest hackish
   equivalent of the Val\-speak "gag me with a spoon". (Like,
   euwww!)  See {bletch}.  2. vi. To say "Barf!" or emit some
   similar expression of disgust.  "I showed him my latest hack and
   he barfed" means only that he complained about it, not that he
   literally vomited.  3. vi. To fail to work because of unacceptable
   input, perhaps with a suitable error message, perhaps not.
   Examples: "The division operation barfs if you try to divide by
   0."  (That is, the division operation checks for an attempt to
   divide by zero, and if one is encountered it causes the operation
   to fail in some unspecified, but generally obvious, manner.) "The
   text editor barfs if you try to read in a new file before writing
   out the old one."  See {choke}, {gag}.  In Commonwealth
   Hackish, `barf' is generally replaced by `puke' or `vom'.
   {barf} is sometimes also used as a {metasyntactic variable},
   like {foo} or {bar}.