secret drawer 

any place (drawer, box, etc.) where toilet paper/paper towels are hidden after masturbation/sex (as opposed to being thrown away/flushed down the toilet).

Edward was very embarrassed when his siblings stumbled across his secret drawer.

secret drawer by Joe Elvorsen-Stevinsky February 21, 2009

secret drawer 

A box, drawer, safe, satchel, etc. where somebody's sex items (such as toys, condoms, dirty tissues/toilet paper, and/or lubricants are kept)

The young boy's curious venture turned to one of horror and shock when he discovered his parents' secret drawer in their closet. It took all the effort in the world to keep from throwing up at the sight of the various vibrators, dildos, and lube bottles.

secret drawer by Mr. DeMille November 13, 2011