Question

how you could make your friend understand your discomfort

Answer 1

It depends what kind of discomfort we are talking about. Some times we cannot tell our friends to leave there is always a better way to make an excuse if you cannot do that then it might hurt their feeling.
Excuse is the best solution

Answer 2

Answer:

Describe an incident that happened when you lost your way and had neither the money nor the phone to contact somebody