a mixture of barf and broth, usually chicken broth, with any number of strange components added from the soup or the expelled half-digested chunks from the person who donated their cud.
can also be used to mean accidentally swallowing someone's vomit because your mouth was open when they projectiled.
I ate Jim's barf soup for 20$, and made some of my own at the same time
Gross! Jane just got some barf soup from that 50 year old!
