Grubgrupgrumphobia is the fear of the Grubhub delivery. Grubhub is a food ordering website where you can order food from popular fast food restaurants like Mcdonalds for example. Instead of picking it up or using a mobile order, it gets delivered to you. Some people could have this fear because they have to socialize with the delivery person. This also refers to Sociophobia, the fear of socializing with people.

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