A Strange But Familiar Country by Robert Sheckley. Short summary

5 seconds

The young man was unable to fulfill the conditions of the ogre and had to become his dinner. But he learned the monster’s real name. This allowed the young man to escape.

1 minute

Denis met an exquisite man with tusks, in whom he recognized the ogre.

He invited the young man as a guest and told him that three nights he would treat Denis to dinner, and on the fourth night the young man himself would become food for the ogre.

But the monster reassured him that that would only happen if Denis did not leave the city before the fourth day.

Denys agreed. The young man attended three sumptuous dinners, met the beautiful cousin of the ogre.

She flirted with Denis all the time. He tried to leave the city several times to no avail and realized that he could not leave.

At the fourth dinner the ogre told him that his cook was ill and that it would be three days before the young man could be cooked. Denis said he understood the names of the ogre and his cousin.

The ogre is Fear, the cousin is Disappointment. Turns out the ogre has to let whoever guesses his name go.