If there's not some weird bug, this effect makes you cough and choke after combat like Coughing Fit.
After one fight I got
You choke and cough up some blood, taking another 4 damage internally.
I had this effect and also Rasping Teeth active.
The next fight was vs. Midgard Security, over the course of which I also got 5 energy of Coughing Fit thanks to my inability to use an air filter with the HKGames helmet on. I lost and got all of this:
You choke and cough up some blood, taking another 9 damage internally. You slump to the ground, coughing up blood, tissue, and teeth. You'll need to rest before you can fulfill this gnawing hunger.
You've gained 9 energy of Ruptured Organs.
You learned a new Technique: Ghoul Bite (2)
I also had the Haunting Cries skill, which didn't trigger and give me Share the Pain. So I don't know what all was going on, but the bit about hunger and the Ghoul Bite seems to fit with the Square Maw.
EDIT: If this isn't a bug, it might be interesting to eat something with Ghoultouched with the effect active.
EDIT THE SECOND: Kinak sez Haunting Cries didn't fire because I won the fight, then died due to coughing. So I wasn't actually beaten up.