A slimy mixture of shit and cum. This phenomenon usually occurs after anal cream pies, when one contracts the semen out of their ass (usually for visual stimulative purposes) to unknowingly present it mingled with their own shit juices.
Guy 1: I was all excited all after loading that bitch's ass with my spooge... until she forced it out with the chipotle burrito she had for lunch.
Guy 2: Weak. What did you do?
Guy 1: I put the spoop on a frozen waffle and made the bitch eat it.
Guy 2: Not weak.