en
other mommy
/ˈʌðər ˈmɒmi/
Definition
1
A term popularized by the film 'Coraline', referring to an entity that mimics a maternal figure but possesses sinister or predatory intentions.
2
A slang term often used in fan culture to describe a 'replacement' maternal figure who is portrayed as more glamorous or attentive but ultimately deceptive or dangerous.
Examples
I thought my new boss was going to be a mentor, but she's quickly turning into an other mommy with all these button-sewing performance reviews.
Her Pinterest-perfect lifestyle blog is giving serious other mommy vibes; I suspect the cookies are made of sawdust and broken promises.
Whatever you do, don't look into the other mommy's eyes too long, or you might find yourself trapped in a parallel universe with a severe lack of snacks.