stripping completely; taking everything off
Informal abbreviation; often used in contexts like adult entertainment or casual talk about removing all clothing. The cross-reference to ストリップ suggests a connection to striptease or stripping acts.
See also: ストリップ
あの店では全ストのショーが見られるらしい。
I heard you can see a full strip show at that place.
罰ゲームで全
I was forced to strip completely as a penalty game.
Abbreviation of 全裸ストリップ or similar phrase combining 全 (all) and ストリップ (strip). The exact origin is uncertain but likely arose in informal or adult entertainment circles.