There are a number of rules of decency on how to behave in a wine cellar, but also in tasting rooms. Often this is made clear in a humorous way on signs in the entrance area, very often in rhyme form. In the old days there were also penalties for non-compliance with the rules, which were mostly articulated in the form of prohibitions. The sinner was placed over an empty barrel by the cellar master or cellar servant and the extended back was worked with blows with the "cellar knife" or "band knife" (an old handicraft tool of the coopers). Although the prohibitions vary somewhat locally, tapping the barrels (to determine the fill level), swearing, shouting, singing, smoking and drinking are frowned upon without exception.