Definition: The “opening of the mind” which occurs in a man after he has unleashed the fattest nut ever nutted in the chronicles of nut-kind. This “opening” is characterized by an incredibly intense feeling of “ awakening ” and “awareness”. (Picture: Ella Byworth for Metro.co.uk) Ever had an orgasm and felt like you’ve suddenly come back to reality and back to your senses? That’s post nut clarity, defined on Urban.