it's ironic how gluttony got eaten, but...
"Gluttony: force-fed rats, toads, and snakes"
i'm somewhat disappointed the manga didn't incorporate the original punishment (from Dante's Inferno) for Gluttony. for those that are new-ish, here's the full list:
* Lust: smothered in brimstone and fire
* Gluttony: force-fed rats, toads, and snakes
* Greed: boiled in oil
* Sloth: thrown into a snake pit
* Wrath: dismembered alive
* Envy: put in freezing water
* Pride: broken on the wheel
Lust was actually burnt to death, and Greed was indeed boiled in oil.