This was sent to me by a fortunate soul who´s had the privilege of living in Catemaco for 26 years and learned to keep his mouth shut:
He remembers the bank guard for Multibanco Comermex here in Catemaco who, some twenty three years ago, asked him for a shotgun shell, 16 gauge, because he had used the one (1) shell he was allotted to shoot a duck the night before in the lagoon, and was some nervous fulfilling his duties with an empty gun.