Will You Look At That

Three Corkmen were flying to Africa to work as labourers on the Aswan Dam. First they crossed the Mediterranean Ocean, so the first Corkman shouted out, 'will you look at all that water'. Next they crossed the Sahara Desert, so the second Corkman shouted out, 'will you look at all that sand'. 'Yes', said the third Corkman, 'let's turn back before they get the cement'.