look up any word, like cunt:
 
1.
The term used for a piece of clothing, most commonly sweaters or jackets, where the collar is automatically popped. This allows the wearer to feel preppy without having to worry about manually popping the collar, preserving their pride.
Thank god that this sweater is an autopop, I would have felt like a real dbag if it wasn't.
by Jet Twoate November 25, 2009
 
2.
A shirt collar that does not lay flat. A collar that pops on its own.
Chris's shirt collar is on autopop.
by Megels April 17, 2007