See >>2115491 for the cleaner but still messy messy version.
There was no use trying to hold it. Her stomach had decided that everything had to go and it had to go now. A flood of liquid diarrhea spilled out the leg holes of her already soiled panties, coating her legs in a foul film of muck. At some point her bladder released as well, but that was the least of her worries. It was almost impressive how much liquid manure her bowels had managed to produce in such a short time.
If I can lick stuff clean sure!!!