SORRY TO RAIN ON YOUR ANGSTY PURGATORY PARADE

BUT MY HEADCANON IS THAT DEAN AND CAS ARE ALL DIRTY AND BLOODY FROM ALL THAT HOT ROUGH PURGATORY SEX
WHERE THEY ROLL AROUND WITH EACH OTHER IN THE WOODS.
THE WOODS CAN BE PRETTY DIRTY, AND ROCKS AND TWIGS HAVE SHARP EDGES
SO THAT WOULD EXPLAIN THE DIRT AND THE BLOOD

AND THEN CAS IS JUST A LITTLE SAD AND COLD BECAUSE HE POOPED IN THE RIVER BEFORE HE COULD BATHE IN IT, WHILE DEAN IS IN THE DISTANCE, FACEPALMING HIMSELF