Is it usually "No!" when asked something?
My mate says I annoy the crap out of him, because he'll say "Hey, lets go to ____ for a day trip on Sunday" and w/o even thinking about Sunday and _____ I'll say, "No." Sometimes I say "maybe". Of course "maybe" is a compromise that developed due to my ISTJ's reaction to the word "no".
When he, or anyone, comes at me with something new or spontaenous my first instinct is to say "no" because typically they've interrupted something going on in my head. I've probably already thought about Sunday and what I'm going to do that day, and because I'm doing XYZ and Sunday I have to be sure that ABC is fixed and ready on Saturday. Going to _____ on Sunday for a day trip means things have to be rescheduled. It also means unwashed masses, most of whom are tourists <ick>, and b-a-d drivers.
I'm starting to think now there's a heavy J component to this.