A chocolate tear is when your ass waters just a little bit, it can either be from drinking too much espresso, or from your ass crying in anticipation of being penetrated.
1. He shed one chocolate tear from his winking brown eye.
2. Her ass cried a chocolate tear after he came early while fucking her up the butt.
When you dip your balls in chocolate and place them over someone's eyes, so that when you move your balls away it looks like they are wearing a bandit mask made of chocolate.
Jim had passed out at the party before the chocolate fountain had run out, so Danny took out his balls and gave Jim a chocolate teabag bandit mask.