A fork of Rural Dictionary
To completely fuck up a simple task in an unnecessarily complicated way
"I went to the car was today and instead of washing my car, the guy dumped paint in my backseat and painted my tires fire truck red, he really double barreled that one"
When you fuck up in a completely and easily avoidable manner
"The patient was injured severely in a chainsaw juggling competition, he really double barreled it this time"