Menstrual blood. Used especially in reference to performing oral sex on a woman who is menstruating (i.e., earning one's red wings). Derived from the blood's soupy appearance. Also recognizes that the menstrual material might have otherwise become a fertilized egg and one day a child (perhaps named "Todd").
Because my girlfriend is on her period, I won't go down on her. I don't want to taste the almost-Todd soup.
by The Dude & Cid November 18, 2006