Google TiSP claimed users would flush a fiber-optic cable down a toilet.
Announced on 1 April 2007, TiSP supposedly meant “Toilet Internet Service Provider.” Google's mock service promised free in-home broadband through existing municipal sewage lines. The fictional installation kit included a spindle of fiber-optic cable, a weighted end, a wireless router, and instructions for sending the cable through household plumbing.
The gag described a system called GFlush, which would propel the weighted cable toward a TiSP Access Node. Users were then told to connect the remaining end to Google's router. The deliberately straight-faced language made plumbing infrastructure sound like a revolutionary broadband network, while terms such as “dark porcelain” and “Plumbing Hardware Dispatchers” supplied the joke's technical veneer.
The answer is specifically “toilet,” not sink, bathtub, or shower drain. Those fixtures may connect to household plumbing, but Google's fictional instructions centered on a toilet and its flush. TiSP was never a real consumer service; it was one of Google's elaborate April Fools product hoaxes.