Did he have an unpleasant experience with a traffic warden or his local constabulary?

I'm trying to put a positive gloss on the whole unpleasant experience.

It had been, they agreed, an unpleasant experience, so much more horrifying in reality than in a movie.

For you, eating a cheese omelette can actually be an unpleasant experience when thinking about what it's doing to the lining of your arteries.

You may claim to dislike walking and it is often an unpleasant experience when confined to hard pavements, and busy, polluted streets.