dog don’t hunt

Verb meaning whatever you’re discussing isn’t going to work, you lack proper equipment, what was proposed is unacceptable or lacking significantly. My son asked me to check his room to see if it was clean. I glanced around his bedroom and exclaimed, “Timmy, that dog don’t hunt.”

I glanced down at my engagement ring and looked at my new fiancé in disgust and said “Billy, that dog don’t hunt”