A girl who willingly or unwillingly takes the
schlong up her butt in an attempt to heal or cure her partner of
whatever malady he manifests.
Initially from a mispronunciation and misunderstanding of the word, "curandera", which means a rural healer, or a sorceress or witch.
The word "culera" on the other hand is accepted Mexican slang for a
female who enjoys backdoor pleasures.
Jay suddenly came down with a mysterious virus, so his wife
Susan did the kulandera thing to ward off the evil spirits.
Or, "That girl
Susan is such a kulandera that she'll let anyone pork her
ass if it will make them feel better."