Top Definition
Telephone capable of bypassing the earpiece and mouthpiece by use of a small speaker and microphone. This device was designed with two uses in mind:

1. place the device in a room so that multiple people can converse with the person(s) on the other end of the line

2. allows user to converse without holding a handset to the ear and mouth..."handsfree"

The amazing thing about this device is that, regardless of the application, everybody sounds like an asshole.
Dude, watch what you're saying...I've got you on sphincterphone.
by Mistr_Sir December 29, 2007
Device invented by (Bob Dylan's) drummer Sandy Konikoff, a microphone inserted into the anus and used to achieve drumbeats by pounding or slapping the legs and chest.
Ned Doheny: That SphincterPhone makes you look like an electric rat.
by Lo Beedle January 26, 2004

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