Mothers Law

Mother's Law; noun
The Mother version of Murphy's Law.

As originally defined in Mikayla's Dictionary published 2024;
When a mom's time and motivation align perfectly to complete tasks otherwise usually pushed aside for lack of time or motivation alignment, the Mother's children will then undoubtedly become extraordinarily clingy, perform dangerous acts and hurt themselves requiring comfort and consoling, fight with siblings (both verbally and physically) and cause various alternative chaotic acts within the home environment, therefore causing the tasks or projects to yet again go undone or possibly worsen.

I finally had the time and willpower to (insert task here) but then the kids went feral - that's Mothers Law for you!

Mother-Out-Law

Noun: the Mother of one's ex-husband or ex-wife. Formerly known as Mother-In-Law.
Abbreviated: MOL
Term of endearment: when you kept your ex's Mom in the divorce.
Derogatory: when your ex can't be bothered so they send their Mom.

My Mother-Out-Law picked up the kids for their Father's holiday weekend visitation.

co-mother-in-law

Child-in-law's mother.

My co-mother-in-law is a good person.

co-mother-in-law

Child-in-law's mother.

co-mother-in-law.