Yeah, that's me. Here's how you can look like an idiot when you're supposed to travel abroad.
1) Get up, look at account. Go "Whee! I can go!"
2) Look at work schedule. Ask boss. Get approval.
3) Call your Mom and ask if you can take your sister.
4) Realize things are bloody expensive and ten days in advance is not enough to take your sister.
5) Buy train ticket and book hotel anyway, annoying your sister.
6) Wait until the day before to plan your suitcase (heh, it was only four days and at least, I'd done the necessary laundry) .
7) Realize you lost your ID and cannot go.
I went to bed at 2:40 AM or something that day, woke up at 5:20 AM in hopes of finding it, but nope.
As a result, I had to go to the police station to report the loss. The insurance policy said "theft" but it ended up as "loss" on the paperwork because the nice policeman said, basically, that lost = one paper, one signature, one stamp. "Theft" , on the other hand, meant a huge wait because I would have had to... huh... oh shoot I can't remember the words, but you know when you sue someone or report a crime against you or something ? Yeah, that phrase. I think.
So I just thought his advice was interesting, since filing a claim would do nothing except lose time (no one stole anything "monetary" so it would have been pointless).
The hotel has accepted to "transfer" the amount of my reservation. The insurance might reimburse me for part of the ticket. So, not all hope is lost, but I really feel like an idiot right now!
TL;DR : If you have an ID and a passport, DO NOT LET THEM EXPIRE without renewing and, most important, KEEP THEM CLOSE AND DO NOT LOSE SIGHT OF THEM.
There :p .