Millie Syndrome

Millie is a character that is married to another character named Moxxie
Both characters are from an adult animated web series called Helluva Boss that was created by VivziePop, which can be found on YouTube
Millie is commonly known as just "Moxxie's wife"
Many people's reasoning for this is that from their perspective, they do not see much of how she is outside of Moxxie, and most of the things she does revolve around Moxxie
So, when someone uses the term "Millie Syndrome", what they mean is that the character is severely underdeveloped and their existence seems to revolve around another character as a whole

"This character is suffering from severe Millie syndrome"

by MeatballDog February 3, 2024

Millie Squared

Millie^2 - the best kind of a friendship. When two friend with the same name are so close they’ve practically merged together

“They’re so annoyingly close.”

“I know, they’re basically millie squared.”

by Kurrttt_2nd June 10, 2025

black mollies

An old word for the black capsules that medicinal speed came in. Back when speed came in these little black capsules, they were sometimes called Black Beauties. In the South, they were also known as Black Mollies. The capsules resembled the small fish known as the Black Molly. Ask someone from the South what black beauties are and they'll say "oh, black mollies."

Back in the old days, you could get black mollies. Purer than meth.

by Anonime June 15, 2007

Mollies

n,pl.- Ecstacy pills of pure MDMA

The mollies were starting to take effect.

by slak November 18, 2003

Honey bunny boo-boo Millie- Millie moo-moo squishy butt baby cakes honey bunny waa-waa

Honey bunny boo-boo Millie- Millie moo-moo squishy butt baby cakes honey bunny waa-waa is a term used by obsessive older sisters for their younger sister. To use this term with your younger siblings replace the word Millie with their name. Ex: Honey bunny boo-boo Maxy- Maxy moo-moo squishy butt baby cakes honey bunny waa-waa. Be sure to entirely memorize this nickname before considering use.

"You are my Honey bunny boo-boo Millie- Millie moo-moo squishy butt baby cakes honey bunny waa-waa!"

by Definitions@123 January 6, 2022

Honey Bunny boo-boo Millie Millie moo-moo squishy butt baby cakes honey bunny waa-waa

This is a nickname for other people, typically used for younger siblings and/or boyfriend/girlfriend. Is customizable.

You are my honey bunny boo-boo Millie Millie moo-moo squishy butt baby cakes honey bunny waa-waa
example of customization...
You are my honey bunny boo-boo Zoey Zoey zoo-zoo squishy butt baby cakes honey bunny waa-waa

by I_am_Zoey April 14, 2022

seth and millie

two people who are meant for each other.

“ oh seth and millie they’re a good couple that are meant for each other “

by miilllliie February 17, 2020