Aren't you glad you don't wear Granny Panties. Let's hope a thong will emerge without any problems. Have to laugh a bit though I know it is worrisome! "Poop Your Thong" may become a hit song for a rapper.
The corgi mix that I used to have loved to eat clothes. If I left anything on the floor for more than 30 seconds she would devour it. That being said, she never had a problem. It did, however, make for some colorful potty breaks :). I wouldn't worry too much if Kirby is still acting like herself.
I walked in my bedroom this morning to findKirby nibbling on something. My first thought: oh great! She's gonna eat more underwear. I got closer and there I t was! She had spit up my thong and was enjoying them again. Haha... I grabbed them from her and once I was sure I wasn't going to vomit I did a little happy dance. :) (yep, rather weak stomach here)