When you drank to much alcohol and you think your a genious. You want everyone to hear what you have to say and think whatever you say is the best opinion.
We were at the bar, my buddy wouldn't stop talking about all his great ideas, he had liquid knowledge.
Being able to verbally spin any situation into your favor regardless of the insurmountable odds. To prepare himself, usually the person will take his thumb and swipe his tongue, stating here goes the golden tongue.
My buddy is going to get that hot chicks number, he has the golden tongue.
My buddy is going to convince his boss that he should get a promotion, he has the golden tongue.