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1.
A true red head's unshaved (preferrably nicely trimmed) vagina. The color of her pubic hair = red e.g. rusty, and box = vagina.
I love my smokin hot red headed girl friends "Rusty Box"! Did you see that ginger at the strip club? She had an awesome "Rusty Box"!
by LytShow March 10, 2011
 
2.
a red headed's vagina
Last night, I spent hours licking her rusty box.
by JoeMama420 March 08, 2011
 
3.
Going down on the ass and not caring about the fecal matter that may be present.
Man, I totally rusty boxed my dude friend last night. Tasted great.
by mr_tl-606 July 13, 2011