DDK - Die Deutschen Klassiker

very funny



...although I must admit to getting caught out by a similar joke ..... back in the day when I was designing pressure vessels , we were testing a new closure / door . Slowly increasing the water pressure inside to check it would hold. Nervously took the water pressure up towards my design limits , then one of the 'welders' sneaked up behind us & slammed down a big hammer on the metal work bench beside us .... almost shat my pants thinking the vessel had failed