A "heated discussion" is normally used as a term for a small fight between two or more people. Rather than a shouting and cussing fight, it is always discussed and reasoned calmly. But in the teen world... having a "heated discussion" is another word for making out
. It can always be used as an excuse when your parents ask why you and your boyfriend/girlfriend were in your room alone for a long period of time. It's the best reason because your parents will usually sympathize with you.
Also, a "powerful heated discussion" is when their is a lot of tongue involved. They're the best.