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A mistake while transcribing a DNA strand to RNA, and changing the RNA into an amino acid. After said change, take the first letter of the amino acid codons and spell out words. maps+list= Map, slist.
"What's a slist?!!!!
oooooh!!!!"
Slist by Azeroth01 February 5, 2007
A Feeling of being sleepy and pissed
I’m so slist today I didn’t get any sleep.
Slist by Gage_Fox October 28, 2021
The stereotypical accent associated with homosexual men.
Yo that guy's got a slist, he must be fruity!!!
Slist by SnakeOilRandy January 12, 2024

Plump Sister 

A woman who has put on a few pounds since the last time that a random 72 year old Uncle will say to Larry, the cousin twice removed, this kind of thing:
Uncle: "Golly! That's Suzanne? She has gotten to be a real Plump Sister since the last time I saw her."
Larry: "Must've been back in the Seventies. Before the kid. Kids. Who knows."

Uncle: "It was May 1979. When they got married...wow she just blimped out!" Larry: "Total butterball. Plump Sister, shame."
Plump Sister by MissPriss9 January 12, 2019

Sister X 

The sister with the most not-relative-siblings in Vietnam.
- Do you know sister X?
- Of course, she's the one with the most siblings in Vietnam.
Sister X by Bé Iu Của Chị X April 23, 2021

Big Sisters & Big Brothers 

Organizations that pair young kids with older "brothers" & "sisters". They spend quality time together & it makes up for not having a Mom or Dad. Great for youngsters!
{Big Sisters & Big Brothers] are in practically every town & city nationwide.
More from Urban Dictionary

Plate of Brown 

A plate of brown consists of foods that have little to no nutritional value, and are typically deep fried. A true plate of brown will also be accompanied by a dark soda.
Wanna go to meal hall & grab a plate of brown?
Plate of Brown by Cheddar Craigson September 18, 2020
Word of the Day on October 22, 2026

Larpenomics

When finance content creators rent out fancy cars and flex cash to seem richer than they really are in order to promote and sell their “get rich quick” courses.
Andrew Tate has mastered the field of larpenomics
Larpenomics by Rbois09 October 21, 2026
Word of the Day on October 21, 2026

Palmela Handerson 

Your hand that you masturbate with.
Girlfriend: What are you going to do for the next week while I'm on holiday?

Boyfriend: Have a visit from Palmela Handerson of course!
Word of the Day on October 20, 2026
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