Last modified on 20 June 2013, at 15:52
From the practice of the third umpire having a room with an elevated position.
go upstairs (third-person singular simple present goes upstairs, present participle going upstairs, simple past and past participle gone upstairs)
- Used other than as an idiom: see go, upstairs.
- (cricket, of an umpire) To request a decision by the third umpire (traditionally by making a sign of a TV set with the hands)