Breastfeeding might play a secondary role in this type of relationship; and being pampered by "mommy", wearing diapers, or a hidden incestuous character may be the predominant motivation in this kind of relationship.Erotic Lactation between partners or an Adult Nursing Relationship (ANR) may develop from natural breastfeeding of a baby.The suckling of milk from a female's breast on a regular basis from one or more partner(s).Successful ANRs depend on a stable and long-term relationship, as otherwise it is very difficult to maintain a steady milk flow.Researcher Nikki Sullivan, in her book A Critical Introduction to Queer Theory, calls erotic lactation a manifestation of "Queer." She defines Queer as an ideology; that is, as a "sort of vague and indefinable set of practices and (political) positions that has the potential to challenge normative knowledges and identities." Drawing on a statement of David Halperin, she continues "since queer is a positionality rather than an identity in the humanist sense, it is not restricted to gays and lesbians but can be taken up by anyone who feels marginalised as a result of their sexual practices." The heteronormative profile of breastfeeding assumes certain norms: Any kind of sexual activity which includes the woman's milk.Such activity is widespread, and often unintentional, in the time after a woman gives birth, since many women experience a let-down reflex (releasing milk) when sexually aroused.Some women experience sensual pleasure from pumping milk from their breasts or expressing milk manually—with or without a partner.In addition to the sensual pleasure, women have reported feeling more feminine while producing milk and continue with lactation for emotional or sensual reasons after weaning a baby.
"Milk fetishism" and "lactophilia" are medical, diagnostic terms for paraphilias and are used for disorders according to the precise criteria of ICD-10 and DSM-IV.Breastfeeding in general is considered by some to be mildly exhibitionary, especially in Western societies (see breastfeeding in public).Breastfeeding mothers have faced legal ramifications for nursing their children into toddlerhood or in public, or for photographing themselves while nursing.Or there are cases where breastfeeding was interrupted for an extended period of time as a result of infant prematurity, infant absence, or mother's illness (taking prescription medication).In such cases, adult nursing has often caused lactation to continue until it was possible for the child to resume breastfeeding.In its issue of March 13, 2005, the London weekly The Sunday Times gave a report of a scientific survey (composed of 1690 British men) revealing that in 25 to 33% of all couples, the male partner had suckled his wife's breasts.Regularly, the men gave a genuine emotional need as their motive.The association of pleasure and nutrition holds true as well for the lips, also erogenous zones, where pleasure may have led to "kiss feeding", in which mothers chew food before passing it on to the child.Unintended milk flow (galactorrhea) is often caused by nipple stimulation and it is possible to reach normal milk production exclusively by suckling on the breast.Others may want to nurse an adopted child, so use an ANR to stimulate breast milk production before the adoption occurs.Though such scenarios do not have erotic motivations, erotic expression may be an additional aspect of the relationship.