Treading in black waters means you are fighting or argueing with someone and you are JUST on the verge of telling them to fuck off. You can only use this term when you are about to end an arguement or a friendship/agreement. Should be used if you are completley ready to lose this persons trust and affection.
After James starting being a smartass and splitting hairs with me about how the server operated, I warned him he was treading in black waters.
1. Select a player (real or fantasy) during a sports draft to spite or anger one or more of your opponents because they had intended to select him/her.
2. Select a player (real or fantasy) during a sport draft to put one or more of your opponents at a strategic disadvantage.
1. Billy hate drafted Chad OchoCinco because he knew Sam had wanted him since he is from Cincinnati. Billy already had plenty of players to fill that position but wanted to make sure Sam didn't get him.
2. Billy hate drafted Peyton Manning because he was the only good quarterback left and he knew Sam had been planning on drafting him.