Rubiães (Minho), Portugal
The megaphallic male on the right is not sucking wine from a barrel, but playing an instrument called the dolio.
photos by Fernando Garcia Gil and José Antonio
Compare him with corbels at Santa Mariña de Esposende (Ourense),
at Béceleuf (Deux-Sèvres),
and at Arthous (Landes).
To confirm that this barrel-like object is in fact a musical instrument,
compare with the left-hand side of the doorway at Moarves (Cantabria)
which seems to be Salome and musicians at Herod's banquet.
see more examples at http://www.consellodacultura.org/asg/instrumentos/os-aerofonos/dolio-cabazas/