smallest room in the house
The phrase "smallest room in the house" typically refers to a euphemism for a bathroom or restroom. It implies that the bathroom is usually the smallest room in a residential building.
An idiom is a phrase or expression that usually presents a figurative, non-literal meaning attached to the phrase. Does that sound fun? It can be!
Play Just Saying - the word game that makes learning idioms a good time on your mobile phone or tablet.