Baldr: what's your blood type?
Tyr: how would I know?
Baldr: how would you not?
Tyr: who am I, Karl Landsteiner, discoverer of blood groups?
Baldr: you know who discovered blood groups but you don't know your own blood type...
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Baldr: what's your blood type?
Tyr: how would I know?
Baldr: how would you not?
Tyr: who am I, Karl Landsteiner, discoverer of blood groups?
Baldr: you know who discovered blood groups but you don't know your own blood type...