A phrase used when a person in a store or just someone trashy does something that makes you want to question it.
Customer: "Hey you want to see my gerbils?"
*pulls out gerbils from ass*
Clerk: "What in the Walmart are you doing?"
*pulls out gerbils from ass*
Clerk: "What in the Walmart are you doing?"
by Smith dux Wurd December 11, 2018