An environmental video where Callum Leigh shows what happens to all the fat, muck and grease we pour down the drain and what would happen to the poor people who have to unblock the drains in their diving gear. Out 'volunteer' who has not been fully briefed on the demonstration, is in a full diving suit with breathing mask and protection. But, Callum gets a bit carried away and when it comes to the final shower, he pulls the waste lever by mistake.