Farges - Saint-Barthélémy

The very remarkable baptismal in the Église Saint-Barthélémy, (11th century), in the village of Farges-lès-Mâcon. It is romanesque - but this smiling face is bizarre! Was this just a very humorous carver, who worked for a very humorous customer? It is not that the carver could not work better, the whole baptismal is pretty perfect, but this grimacing face.... Or is it a smiling angel, happy that another soul is saved here? Maybe you know better...