Dirty Satchel
When you are sixty-nining with a girl, but you end up vomiting on her, so she ends up with a mouth full of cum and a pussy full of vomit. A "Satchel" if you will.
Person A: "We were going at it so hard, I accidentally gave her a Dirty Satchel."
Person B: "Eww, disgusting!"
Person B: "Eww, disgusting!"