John and I or John and me. Which is correct?

Q:

Dear Grammer Cop,

John and I or John and me. Which is correct?

Mary
A:

Dear Mary,

This depends on the situation, and what part of speech the phrase takes. If the word is the subject of the sentence or phrase, use "I". If the word is the direct object of the sentence or phrase, use "me". If you're confused by the compound (having two names), simply take one away.

Examples:

John and I went to the movies. -- I is part of the compound subject. It would be "I went to the movies" without the compound.
Mary went to the movies with John and me. -- "Me" is the object of the phrase starting with "with". I would be "Mary went to the movies with me" without the compound.

So, when in doubt, just remove the other name and see what makes sense. You wouldn't say, "Me went to movies" or "Mary went to the movies with I".

Hope this helps!