should be: But you still haven't explained what you're doing back here and I'm left with no explanation for what you're doing standing in my front yard.
not: But you still haven't explained what you're doing back here and you still haven't explained what you're doing standing on my front lawn
should be: But you still haven't explained what you're doing back here and I'm left with no explanation for what you're doing standing in my front yard.
not: But you still haven't explained what you're doing back here and you still haven't explained what you're doing standing on my front lawn