Mama's basement syndrome 

Mama's basement syndrome is a psychological syndrome which primarily affects men who are acquiring masters degrees but who haven't moved out of their mother's basement yet. Symptoms include lack of self-esteem, self-doubt, guilt, fear for the future, sexual frustration and severe dependence on family members.

Richard is happy that he's getting his PhD in philosophy, but he also suffers from mama's basement syndrome and finds it very difficult to move out of his parents' house. He's afraid his girlfriend will leave him if she finds out where he really lives.

Mama's basement syndrome by Aliases August 15, 2014

Lauren's basement

Jeremy Shada is trapped here.
Probably Steven Yeun too.

Help them.
You most likely won't understand this unless you're Voltron trash

"Did Jeremy finally get out of Lauren's basement?"
"I think she only let him out for that interview, but he still revealed klance to be canon for the 58618283234th time"

Lauren's basement by Deathlysilence January 20, 2018

Eric Forman’s Basement

The greatest and most chill place on earth also the best place to get baked.

Hey let’s hang in Eric Forman’s basement and get high

Eric Forman’s Basement by YoungDagger8===D February 4, 2019

Beyonce's Basement 

The place where Beyonce keeps Sia.

Friend 1: Omg did you know that Sia is trapped in Beyonce's Basement and Beynoce is forcing Sia to write songs for her???
Friend 2: Wow I didn't know that!

Beyonce's Basement by RickyOfDaBay February 25, 2021

Lauren's basement

This meme originated from the Voltron: Legendary Defender fandom when one of the voice actors, specifically Jeremy Shada, accidentally spills a spoiler. Then, someone started a meme that Lauren Montgomery, one of the executive staff, is going to lock Jeremy up in her basement to prevent him from saying anything more. So now, whenever someone from the show spills a spoiler, fans say that they're going to get locked up in Lauren's basement.

Person 1: Hey, have you watched the interview between the main casts of Voltron?

Person 2: I did. Jeremy's going to go back to Lauren's basement again.

Lauren's basement by ExceedingTheWordLimitBeLikeWai August 2, 2018

Uncle Joe's basement

A place where little kids go to be filled by Uncle Joe's juices

Uncle Joe's basement is almighty in basement with little kids

Uncle Joe's basement by Uncle joe's kiddy handler February 14, 2020

mom's basement 

Stereotypical home for the geek, nerd, fatbeard, loser, etc. The term implies that the individual still lives with one or both of his parents despite being a grown man. Reasons for still living at home may include a lack of drive and ambition, being unable to afford a place of his own due to spending all of his money on his hobbies (i.e. Star Trek figurines, comic books, and online role-playing games), or just plain being a mama's boy.

"Jeff is such a loser. He really needs to move out of his mom's basement and work on getting laid rather than spending every free minute playing World of Warcraft."

mom's basement by You Can't Kill the Metal September 11, 2006