A person who is a simpleton, a tool, or a very simple tool. From the idea of the extremely simple tool, the T-square. Also, for idea of tool squared, that is, tool to the second power, with the idea of being a super-tool. Also, t squared, T2, tsquared, or t square.
Matt: "Ted gets off on looking at pictures of farm animals."
A sexual position where the penetrating partner lays on their side perpendicular with the receiving partner. The reciving partner lays on their back draping their legs over the penitrating partners side. The resulting formation looks like an architectural T-Square
"Hey babe you want to mix things up and try the t square this time?"
A Japanese fusion jazz band. They recently (2004) celebrated their 25th anniversary and have over 20 albums, including several collaborations with jazz artists from across the world. One of their albums, Megalith, was released in an overseas version outside of Japan.