idiot + box
An allusion to the supposed mind-reducing nature of television programming or its lack of educational value.
idiot box (plural idiot boxes)
- (idiomatic, chiefly US and Canada) Television.
2003 March 31, Bill Litchfield, “Basketball Fans”, in rec.gardens, Usenet:
- During the long, dreary, wet winter I amused myself by watching college and Pro basketball on the idiot box.
The same term could also have an application towards computer screens and tablets.