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pig out (on something)
Inf. to eat too much of something; to make a pig of oneself. I intend to really pig out on pizza. I love to pig out on ice cream.
Eat ravenously, gorge oneself, as in The kids pigged out on the candy they had collected on Halloween. [Slang; early 1970s]
To eat greedily, ravenously, or voraciously; gorge: The food was free, so I pigged out. We pigged out on ice cream until we all felt sick.