Muligan and Lafayette: We? Fought with him
John Laurnes: Me? I died for him.
George Washington: Me? I trusted him.
Angelica Schuyler, Eliza Hamilton, and Maria Reynolds: Me? I loved him.
Aaron Burrow: And me? I'm the damn fool that shot him.
When one apologises to another, typically one of African-American origin, and promises to either 1. change what they did, or 2. not do what they did again, the second person would use this phrase to make sure the first understands that he doesn't have power.