Sibling doodled inside my passport.

I'm due to fly internationally tomorrow and I found out today that my brother doodled inside my passport as a "prank"...

It's an EU passport and he drew on the blank pages for visas and stamps.

I'm wondering how f*cked I am, as I've read it can invalidate your passport entirely. 💀

Any info or advice?? I've still got about 8 years on it and would rather not throw it out if possible.

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Edit: This post got many more responses than I expected!! Thank you to all for the replies! 🌸

Most responses have been very straightforward in what I should do, which is fair, when I wrote my post originally it didn't quite click how much trouble I could get myself in, and how much hassle this may be.

For some additional info; my brother is an autistic young teen and has always been a prankster. I won't be suing him, or my parents, and I won't be killing him, haha! But he's had a good talking to and what I feel are appropriate consequences.

I'm still unsure of what to do, but I'm leaning towards giving it a go, as my reason to travel is to see my sick grandad in my family's motherland, and I'll be travelling with my family (including the perp). But thr thought of the worst possible outcome is killing me.

I'll write another update after a decision has been made and fulfilled. Thank you once again for the responses! And have a great day/night!

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Final update:

Phew, made it to my destination safe and sound. Passport control officer didn't even check, and hushed me and my family off after he was done, so barely any time to explain or anything... Lucky me I guess!

I'll be looking into what I can do with my nearest consulate about what to do about this when I get back, probably reporting it as damages, but in the meantime, I'm happily spending time with my family in my motherland taking it easy! 🌸✨

Thank you once more to everyone who was helpful, be it with your experiences, your hope, or your realness.

1000 upvotes and I reveal the doodle (won't happen lol) 🤪🔥🔥🔥