This has two means to it actually...

1. When your kitten plays in a pit full of rusty metal scrap pieces.

2. The act of rubbing a rusty pipe around on your vagina.
1. Dude you clean kitten is going to turn into a rusty kitten.

2. Honey? Why did you give yourself a rusty kitten??
by Taco Sanchez August 4, 2006
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The butt, or more specifically, anus
-So how's your new girlfriend
-She's ok, but she won't take it in the rusty kitten
by Salty Skillz March 21, 2006
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