Oh hey. I was searching for this post for a while; I dozed off while translating, and when I woke up the pc had restarted, closing danbooru along. Thanks to crownofleonidas for adding the translated tag and finishing the bubbles that I didn't finish.

Translation note said:
It's actually missing the word "underwear" for some reason. Author mistake? Or just too embarassed to blurt it in public?

The actual noun can be implied, like it can in English e.g. with phrases like "mine" or "my one".