1 Erwin: They want breakfast.
1 Hitler's Brain: Nein! Absolutely not!
2 Hitler's Brain: Then they will claim their last meal was not their last meal und we will be in some sort of prisoner paradox und unable to execute them at all!
3 Hitler's Brain: Go drag them out of die cell und shoot them immediately!
3 Erwin: Jawohl!
4 Erwin: {walking off to get the prisoners} I did not know he was interested in logic paradoxes.
4 Haken: {walking with him} What else is he going to do? Play football?

My original script for this had panel 4 as follows:

Erwin: He is nasty.
Haken: You noticed?

While putting the photos together I realised how lame this was and tried to come up with something better. My first alternative was:

Erwin: I did not know he was interested in logic paradoxes.
Haken: He is a brain in a jar. What else is he going to do? Play football?

And then after making the strip like that I realised Haken's first sentence is completely redundant. Don't tell the audience something they already know. So I removed it, tightening the dialogue and making it better.

Hitler's Brain is making a reference to the famous prisoner paradox, in which a prisoner argues that he cannot be executed because of various logical arguments that are better examined in the Wikipedia article than here.