This guy was out walking his dog beside a lake when he saw a woman just managing to keep her head above water, but then she slowly sank. He dived in, grabbed the woman and pulled her to the edge of the lake. He placed her on her back, raises her arms and starts making pumping movements. Each time he pumps, a thick jet of water shoots out of her mouth!
While this is going on I'm stood there watching the events, shaking my head in disbelief. The man keeps pumping, but each time that thick jet of water shoots out of her mouth! Still shaking my head i said, "mate, That's never going to work."
"Shut up! I know what I'm doing, I'm a doctor." the bloke practically spat at me!
"Well," I said, "I'm an engineer and I'm telling you if you don't take her ars* out of the water you'll pump the f*c*i*g lake dry."