Should a photograph label read “you and I” or “you and me”? [duplicate]

I had a debate with my friend about this topic because he had a photo captioned:

Seth and I playing lion king

and I said it should be

Seth and me playing lion king

Which is correct?

You can't really insist on one or the other being correct, because you are not working with a complete sentence. I think the best you can do is to recognize that the majority of English speakers would use "Seth and me."

Even if you add the implied initial phrase that would make it an entire sentence ("This is"), you still wind up with some debate. "This is I" is formally correct (i.e "This is Seth and I playing lion king"), but the vast majority of English speakers consider it pompous and awkward, and still would use "me."