I will clean the whole house when pigs can fly.
pigs can fly
idiomAlternative form of pigs might fly.
If you think he is going to apologize for his mistake, pigs can fly.
She dismissed his grandiose promises with a cynical laugh, noting that such an outcome would occur only when pigs can fly.
- 01
fly blind
To do by guesswork; to feel one's way.
- 02
fly by
To pass or go past quickly, often without much interaction
- 03
fly by the seat of one's pants
To pilot an aircraft without the aid of instruments and without a flight plan, using only instinct, visual observation, and practical judgment.
- 04
fly in the face of
To act in a manner highly contrary to; to counteract or contradict.
- 05
fly in the ointment
Something (especially a minor thing) which ruins or spoils everything else, or makes it less pleasant; a nuisance or problem; a disagreeable or unpleasant detail.
- 06
fly low
To have one's fly (zipper) undone.
- 07
fly off
To flee rapidly; to run away.
- 08
fly off at a tangent
To digress from a topic.