A lot of times what I want to say (my "first instinct response") isn't actually what comes out of my mouth. If what I want to say could be seen as innappropriate or could hurt someone's feelings, Fe will usually "catch" my tongue at the very last second. The other day I was walking through the mall - in full Ti mode - focused on what I was there to do, walking with a purpose, and getting things done efficiently. One of the holiday salespeople started to approach me and I could tell she was about to open her mouth and start giving me a sales pitch. I almost stuck out my hand as if to stop her and said, "Not really feeling it right now." My natural instinct was to say that and to just keep walking. But, Fe, the good angel on my other shoulder, reminds me that there's a better, nicer, more pleasant way to deal with it. To not be a total "grinch". I couldn't help but laugh inside because it was such a random, blunt thing that Ti came up with. I try to give Ti a voice - I think it's very effective in a lot of situations, but if it were to have total free reign, it really would damage a lot of friendships/relationships - or even make it very difficult to make friends or to have meaningful professional relationships of any kind. Sometimes Ti is overused and other times its underused.
It's not that I'm a jerk at my core, it's just that I'm so intensely focused on what I'm doing. It's sometimes like a little kid who sees a big chocolate factory way down at the end of the mall. He's going to keep his eyes and thoughts focused on that destination until he reaches it. Anyone trying to stop him and talk about something else is going to aggravate him and pull him away from where he wants to be.