a hot potato

a hot potato

  (informal)
something that is difficult or dangerous to deal with The abortion issue is a political hot potato in the United States.
See also: hot, potato
References in classic literature ?
Make haste, for there's a hot potato besides, and half a pint of fresh-drawn beer in a bottle.
There's even a musical toy made to look like, you guessed it, a hot potato.
With a role in the recent hit movie "Toy Story," he is definitely a hot potato.