Google Toilet ISP (beta) (Updated)
Chalk up another great Google April Fool.. 
Google TiSP (BETA) is a fully functional, end-to-end system that provides in-home wireless access by connecting your commode-based TiSP wireless router to one of thousands of TiSP Access Nodes via fiber-optic cable strung through your local municipal sewage lines.
Google – turning the fear that the Internet is a sewer into reality.
Update: Google have another, which is Google Paper. This one found via Wikipedia’s list of April Fools for 2007.
Toilet Internet Service Provider Offical Website seems already out??
You know, while this is a prank, and it does raise some serious concerns with clogging the pipes (stuff catching on the cable) it really isn’t a bad idea. The last run of cable into the house is one of the most expensive connections. If they dropped in a fiber run and pulled it out at regional sewage taps, it would be very, very inexpensive. I’d put time/money into this Apil fools joke if one could resolve that one concern!