MOAC
n.— «Thorne said IED explosions can leave large craters—some as big as 80 feet wide. He said the massive holes are commonly referred to as MOACs, or Mother Of All Craters. “Sometimes they are four lanes wide,” he said. “It will take all night to fill it.”» —“After the blast” Batesville Daily Guard (Arkansas) July 3, 2007. (source: Double-Tongued Dictionary)
Further reading
An Arkansas listener is puzzled when a neighbor notes that the weather turned off cold. This expression is part of a long-standing American dialect tradition that includes come off cold, come off hot, or turned off pretty. Such phrases show up...
Whippoorwills, bob whites, and chickadees. How do we decide the names of birds and what to call their calls? Plus, the last syllables of Arkansas and Kansas are pronounced differently, but they come from the same etymological root. And: What’s the...