Many will be familiar already with the technical details of when to use 'I' and 'me' in a sentence.
I hit him, he hit me, etc.
What I'm confused about is cases such as "me and John went to the shops". Or "who went to the shops earlier? Me and John did."
It's often desirable to list one's self first, either to be emphatic about one's own role in what is being said, or to give one time to think about who else was involved.
These appears to be cases where one cannot change the word "me" to "I" without also changing the word order. For example, you can't say "I and John went to the shops", it has to be "John and I went to the shops".
Is this a formally-recognised case in which "me" can be used in place of "I" (that is, when listing a series of names where the speaker is mentioned first in the list), or does it amount to formally "incorrect" usage despite being almost universal in speech?
To be clear for those who insist this has already been answered, I'm not looking for an explanation of the general rules about I and me. In the specific case where one's self is referred to first in the list, the de facto correct formulation is to say "me and John went to the shops", not "I and John went to the shops". I think we can all agree that the former is actually correct in practice, and the latter is incorrect. My question is whether this is recognised formally as an exception to the usual rule about I and me?