I'm mortally afraid of talking to strangers on the phone, such as calling to order a pizza or customer care or calling someone to interview them or answer an ad.
I find it really annoying that an INFP will propose a plan, reluctantly at first, and then expect you to be all excited about it and then pout when you aren't in the mood to go along with whatever crazy plan they have for the day!!!
A conversation between me and my INFP friend will go like this:
She: "What do you want to do today?"
Me: "Go out somehwhere, maybe?"
She: "Go out? Cool! Why don't we visit XYZ tourist spot?"
Me: "What? Oh...I was just thinking of shopping or having a coffee or something."
She: "No, think about it! We could just take the first bus out."
Me: "A bus? Now? But where do we go? We haven't booked any bus or place to stay or anything..."
She: "Okay, let's go to the bus station and jump into the first one we see. We can decide where to go once we see the buses there."
Me: (feeling helpless) "But...I don't..."
She: "Ohhh....you don't look happy." (looks sad. Then angry.) "I didn't know you could be such a killjoy! Fine, I'll go on my own!" (stomping off)
Me: "Oh all right, I'll come...but I don't want to do this. I want to go have a coffee."
She: (smiling horridly) "If you don't want to, you don't have to. Really. I'm fine. You go ahead and have your coffe. Bye."

This happens a lot!