dack

To pull down someone's trousers as a practical joke.

Verb

  1. To pull down someone's trousers as a practical joke.
  2. To cause political embarrassment in order to gain advantage over an opponent.
    • We have it because way back in 1918, Billy Hughes — the Labor defector and leader of the Nationalist Party, from whose remains Robert Menzies was ultimately to build the Liberal Party — introduced preferential voting...

Origin

From daks, Australian slang for trousers or underwear.

Forms

dacks dacking dacked