Many years ago, maybe in the late 80s or early 90s, I saw a comedian on TV. I can't remember his name. He was a young, black guy. He said that every family has a Cousin JuneBug. Cousin JuneBug is always lying and exaggerating about things. Cousin JuneBug finishes his tall tales with "I ain't lying."
The DUmmies are this country's Cousin JuneBug. They're just too rude to finish up with "I ain't lying."