Don't drink and dive.
An insurance company in Sweden wanted to show people the dangers of swimming while intoxicated. They enlisted the help of Stockholm's Champion Men's Synchronized Swim Team. The men did a bunch of shots and took breathalyzer tests to make sure they were drunk. Then, they jumped into the pool.
The results weren't pretty. Some of the swimmers could barely stay afloat. Lifeguards were on scene to supervise.