I still don't have useful software for adding text to comics, but:

1 - "Pooh, what happened to your belly button?!"
2 - "I donated it to Little Orphan Annie."
3 - "They're about to introduce a new character, but there wasn't enough ink for its eyes."
4 - "I was promised this would all make sense later!"

Whoops, I totally forgot about that "Oh?"

I wrote the above like it wasn't even there, but I guess I'd want to change it to an "Ah..."

Still a great response

Piglet: you really believe communism will work, you are a blind fool!

Winnie: oh‽

Winnie: better a blind fool who believes in the will of the people

Winnie: than a deaf-blind-mute following the leash of their masters!

Winnie: now excuse me! I must attend my weekly committee meeting for the socialist party! Good day!

Image version!