Definition

Morning After the Night Before Breath—that special bouquet of regret, alcohol metabolites, and death that greets you upon waking after a night of drinking. It's the olfactory evidence that your body is processing poor decisions and punishing you accordingly. No amount of regular brushing can defeat this monster; you need industrial-strength intervention.

Example Usage

I woke up with such bad MANBB that I brushed my teeth three times and just bought new toothpaste out of shame.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=MANBB&defid=3848301)