Interchangeable. Useless. Disposable. Worthless. Waste.
"Who cares what that guy said. He is a T-shirt at best".
by Bunghole Jones 2 August 08, 2007
A shirt often worn when one is drinking tea, this definition dates back from early english explorers in africa in the late 1600's when these would be referred to as Tea-shirts. Later in the industral revolution, snotty urchins could not spell 'tea' so the word was shortened to Tea
I'll put the kettle on while you change into you T-shirt
by Firerain January 11, 2004