air chair; wall sit
An exercise or prank where one mimics sitting in a chair without actual support, often against a wall.
We were made to do wall sits in PE class.
The air chair is a training that works the thighs.
chain of people sitting on laps
A party game or stunt where people sit in a circle on each other's laps, forming a self-supporting chain.
We played the lap-sitting chain game at the training camp.
Standard kanji spelling.
Variant with katakana イス.
Compound of 空気 (air) and 椅子 (chair), literally 'air chair'. The term describes the illusion of sitting without a real chair.