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Related to scarf out: scarf down
scarf out (on something)
To eat (a specific thing) gluttonously or to excess, especially unhealthy food. Once a month, my friends and I get together and scarf out on pizza while we watch cheesy horror movies. I'll just have a salad. I've been scarfing out too much lately.
Sl. to overeat. I scarf out whenever we have pizza. My brother scarfs out every day—around the clock!
in. to overeat. (see also blimp out, pig out, mac out.) I scarf out every weekend.