When I was a little kid, I had this toy box covered in baseball cards. Like shellacked to the outside as the finish on the toy box itself. It was a really cool little boy kind of thing my dad made me. Anyway, when I was twelve, I start nutting in my sleep all the time. I don't want anyone to know this, so I start putting the jizz filled grunds in the toy box. Later I started jerking off into socks and putting them in there after I was done. One day I'm sitting there trading baseball cards with my friend and my mom goes into the closet looking for something. I have no idea why she opened that box full of discarded jizz garments, but she did, and just completely flipped out while the other kid was there. At first I don't think she could figure out what all that shit was, then when she did she just acted all disgusted and disappointed and heart broken and was pulling all those dusty, crusty jizz rags out of the closet and chastising me in front of my friend. I honestly nearly died from embarrassment.
Grunds or grundies is a colloquialism for underpants, specifically briefs.
Now I see this useful help at [deleted]