I'd be less pissed at myself if I didn't realize right away what I had done, lol.. Like, a week later would have been better, but the feeling that you've JUST done something incredibly stupid is the most annoying thing, cause like.. couldn't have you just thoguht about that like three second ago, dear brain?? XD
Awww, that sucks, but things happen, and don't feel so bad about it! At least I hope that maybe Midgardsorm is more fitting for the lower ID? I've definitely switched pet names before for IDs and certain birth date before.
