A rat who lives in a sewer with X-box speakers, 5.1 surround sound WoW speakers, Rainbow Six, and a Blue Dickies Jacket. He is also a trainer of the TMNT (teenage mutant ninja turtles) and has a afro.
master splinter has 5.1 surround sound 500 $ speakers.
by Ratfro September 05, 2007
A person who looks like a rat, but with the training of the Karate. So in essence Master Splinter is just a Ninja Rat Boy
Ahh! Master Splinter you have honoured us with your presence.
by Maverick October 13, 2003