kangaroo code

from The Free On-line Dictionary of Computing (8 July 2008)

spaghetti code
kangaroo code

   <programming> A pejorative term for code with a complex and
   tangled {control structure}, especially one using many
   {GOTOs}, {exceptions}, or other "unstructured" branching
   constructs.  The synonym "kangaroo code" has been reported,
   doubtless because such code has so many jumps in it.

   [{Jargon File}]

   (1997-02-17)