What is the definition of Exceptions Blood Cells?

Ah, exceptions blood cells! Now, picture this: Imagine a world where every single person in the universe was a blood cell with an extra birthday suit accessory - let's call it a 'hair color switch'. That's basically what exceptions blood cells are - they're the ones who refuse to follow the rules and change their hairstyles, or in this case, their blood types, whenever they're bored.

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Now, for an edgy example sentence: "The vampire's last blood cell was a rebellious redhead with a penchant for vampire puns, proving that even in the supernatural realm, exceptions blood cells rule the day."