A tourist goes to the pole, and meets an Eskimo.

"During the summer you don't have any nights, and during the winter you
don't have any days... What do you do during that endless summer day?" he
asks.

"We go fishing, and make love to our women," the Eskimo replies.

The tourist thinks a while, and asks another question:

"Then, what do you do during that endless winter night?"

Eskimo grins:

"We don't go fishing..."