It takes place in a Catholic church, and you can see a little girl named Magdalena getting baptized by a priest. She’s clearly unhappy with it… which is why she insults the priest throughout.
At various times, she calls him “Puto”… which has a derogatory connotation but effectively means “asshole.” She also yells out “Dejenme” (“Let me go!”), all while her embarrassed parents are telling her to be quiet and covering her mouth so the priest can finish the baptism.
I like that kid. She knows what’s up.
It’s unclear when and where this baptism took place.
(Thanks to Valentin for the link)