The dirty trick (Hebrew: התרגיל המסריח, romanized: HaTargil HaMasriaḥ, lit. 'The stinking trick') was a political scandal that erupted in Israel in 1990. It referred to an attempt by Shimon Peres to form a government made up of the left-wing factions and the ultra-orthodox parties. It failed when the ultra-orthodox parties backed out on the deal.