If “me and my twin” is a short form of the sentence “This is me and my twin.” then it is actually more correct to say “This is I and my twin.”
So I think this is just language drifting. In English, we use the objective under posts like this. That is to say that “Me” is what you’d normally say to post this. But that’s because language has shifted so that “This is I.” sounds wrong. (To be clear, it is proper.)
In German, you would use the nominative here. That is “ich” translating to “I”. I believe English is the outlier here when we consider what grammatical case most languages would use here.
To be clear “Me and my twin in the 80s.” is not wrong. But if you needed it to be a proper and complete sentence “This is my twin and I in the 80s.” is correct.
If “me and my twin” is a short form of the sentence “This is me and my twin.” then it is actually more correct to say “This is I and my twin.”
So I think this is just language drifting. In English, we use the objective under posts like this. That is to say that “Me” is what you’d normally say to post this. But that’s because language has shifted so that “This is I.” sounds wrong. (To be clear, it is proper.)
In German, you would use the nominative here. That is “ich” translating to “I”. I believe English is the outlier here when we consider what grammatical case most languages would use here.
To be clear “Me and my twin in the 80s.” is not wrong. But if you needed it to be a proper and complete sentence “This is my twin and I in the 80s.” is correct.