3 men were riding in a jeep through the Sahara.
As they were riding, the jeep broke down.
Given that it was 150kms to the next town,
they decided to abandon the vehicle and start walking.

Before embarking on this journey,
the 1st man grabbed a bottle of water with him from the jeep.
The 2nd man took a tent
and the 3rd man took the door of the jeep.

After walking several hours, they met up with an Arab.
The Arab asked the 1st man,
"Why did you take the bottle of water?"
The man replied, "When I am thirsty, I can drink from the bottle."

When asked why he took the tent,
the 2nd man said that when he was tired at night,
he pitch his tent and sleep in it.

The Arab was curious and asked the 3rd man
why he took the door of the jeep.
The man said, "When I am feeling hot,
I can screen down the window and let the air in."

The Arab : ???!!!???