Adult Nursing Relationship is a type of sexual fetishism (i.e.erotic lactation).
Suckling from the female breast as an expression of close intimacy and mutual tenderness. The relationship of both partners is based on equality and mutuality.
There exists a very old story mostly called "Roman Charity" or "caritas romana". This story is most known from old paintings showing a young woman nourishing an old man who is imprisoned by suckling him.

A crimp is a penis that does not open, and has no opening to pee, if that can be visualised. It is largely mythical as I have yet to come across someone who will openly admit to having a crimp. But then male lactation is also largely mythical but there are many websites devoted solely to that practise...

see cum, jizz. sperm

A male of any age that has the emotional and sexual mind set of a young boy with the added desire to be a wife to a dad or father figure.
Often this desire is enhanced by a desire to have all of the abilities of a female, (lactation, and childbirth) without the need for a sex change surgery.
A true boy-wife will maintain his body appearance as a young boy, often without body or pubic hair.
A boy-wife is not a transexual, transgender or cross dresser, but when in wife mode, often utilizes some form of minimal female clothing; (ie; panties, night gown.)

The lactation from a male with Gynomastia or man boobs

When an adult (usually male, but not required) sucks the milk from a lactating woman, usually while masturbating.

A occurrence in a human male who is obese where the increased number of female hormones combine with the fat to create a saggy, wrinkly mess around the nipple area. This can sometimes lead to lactation, and decreased activity in the hardening of the nipples.

Otherwise Known as "shriveled whales" and "Inflated Dehydrated Chest Syndrome"