A father with two daughters crosses the Sahara in a jeep when 40 robbers come out of a duststorm and take away all they have.
The father says after the robbers are gone "we are lost without a compass and a map, we are doomed" but daughter one says"no, i have the compass, I put it in my knickers" and daughter two says "I stil have the map, I too put it in my knickers".

"Damn" says the father "if your mother would be here we would still have had the jeep too"