Roll (over) in (one's) grave American British verb phrase
Americans usually say roll (over) in (one's) grave while turn (over) in (one's) grave is primarily heard in the UK.
Used to say that a dead person would be very angry or upset about something that someone has done
If my father knew that I lost all of my inheritance on shares, he would turn over in his grave.
To complain that something is unfair or illegal.
To feel devastated because of a minor problem or accident
To intentionally and spitefully insult or show disrespect for someone
Suddenly become crazy or very angry or lose control
A source points to the mid- to late-nineteenth century for the origin of this phrase.
If someone has a cast iron stomach, they have a strong stomach that can digest unusual food and even bad food without being ill.
Jimmy must have a cast-iron stomach, when he drank milk with lime juice and felt perfectly fine afterward.