It's a monster - no, wait, it's just underwear

I was awakened by soft sobbing from S at 5 AM. I dashed in and he was sitting up, sobbing and shaking. He pointed to the corner of his room and told me there was a monster there. I looked over and saw underwear. I slayed the underwear monster and now it is doing time in the washer, with a little extra soap to make sure it won't scare my S man again.