BS Standard

The construction guys next door, well, they're still working. They built half a wall below ground level up to where they were going to start rebuilding our wall that they broke...then their half wall fell down again and they had to start over. The day it fell down my friend went over and asked them how it was going and was giving them a hard time and the guy in charge told him 'Don't worry. We're making it up to BS standard.' My friend was like 'BS standard?' and the head guy said 'yes, British standard...BS standard.' Hmmm.....