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Ich kenne dich nicht und kümmere mich nicht darum, was du denkst. Ich habe erst jetzt Spaß mit Google Translate, sonst würde ich nicht antworten.

Ich auch, oh was haben wir gelacht

If I wanted to prove to you that that is my photo, which I don't, how would I do it?

If I say it is not your photo. Would you do it then?

Is it really your photo?

I do not believe you.

yes yes, no one cares.

The interesting question is not about belief, but proof! How can one 'prove' a photo? I don't even know how someone would start.