like a greased pig

like a greased pig

Difficult to catch or hold due to being evasive in some way. Likened to a contest in which contestants attempt to catch a pig that has been covered in grease and set loose. These corporate executives are always like greased pigs when you try to hold them accountable for their actions. I tried to grab hold of our son to bring him inside for dinner, but he was like a greased pig!
See also: grease, like, pig
Farlex Dictionary of Idioms.

like a greased pig

mainly AMERICAN
If someone is like a greased pig, they move very fast and nobody can catch them or stop them. He slid past her like a greased pig. Note: This may come from a fairground competition which was popular in the past, in which a piglet that had been covered in grease was let loose and the person who caught it won a prize.
See also: grease, like, pig
Collins COBUILD Idioms Dictionary, 3rd ed.
See also:
  • catching
  • catch hold of
  • catch (a)hold of (someone or something)
  • catch/get/grab/take hold of somebody/something
  • catch-as-catch-can
  • catch as catch can
  • catch (one) with (one's) pants down
  • catch somebody with their pants down
  • catch someone with their pants down
  • catch with pants down