When you share an experience with friends, you may be telling them stories or, showing off. With a sentence like "I got 70 for my paper", people might say, "that's great!" or even, "show off." Why? Probably due to your tone when saying it. Let's say, you raising up your voice in a conversation, friends might comment on it, asking why you are so angry, even if you didn't mean it. Basically, it's based on how they feel as you speak, to determine your 'purpose' of telling stories. Also, it is too depends on your relationship with that person, or more like whom that person consider you as.
