look up any word, like cleveland steamer:
 
1.
a paper binder that is painful to use because of those sharp paper holder tabs
I just cut my finger on this obsolete duotang, I should not have been such a cheap skate and bought a real binder
by Ben777 March 18, 2008
 
2.
A scene in a porno that involves 2 girls.
That 2 Girls 1 Cup video is the worse DUOTANG movie ever!!!
by Saints Slang July 30, 2010