А вот про это я раньше не читала:
Oh, and someone told him about the nine angel ranks or something (like cherubim, archangel, angel and so on) and he asked what Castiel was again, and she said angel, the bottom rank and he kept saying 'right, Castiel is the bottom. Of course.' and then he winked, because there were more than a few snickers.
Из этого отчета