Definitions by CapnMidnight

Walmart biceps 

Arms that have so much fat hanging off past the elbows, it is virtually indistinguishable from a superheavyweight sumo wrestler. This phenomena is commonly observed in Walmart stores, where the average shopper has said biceps.

Upon further examination of average "Walmart people" on any given day, the number of morbidly-obese, hillbilly shoppers with Walmart biceps was staggering.

Walmart biceps by CapnMidnight August 6, 2014