Duolingo 

The messenger of hell. He kidnaps your family and you might get them back if you complete your lessons.

“Idk man... the duolingo owl is kinda hot...”

Duolingo by （；＿；） April 11, 2019

Duolingo 

The living embodiment of Satan; will do anything he possibly can to make you pay for your absence on his spanish lesson, you bafoon.

Hey! Last night, I skipped my lesson on Duolingo!
What happened next?
Remember my kid?

Duolingo by DracoBoom October 29, 2019

Dueling Harmonica 

Two individuals, undefined in orientation and/or gender, each partaking of one half of a mans penis, divided lengthwise, by means of oral suction.

After a heated arguement, they decide to compromise and perform the dueling harmonica.

Guy 1: Yo, these two babes shared my donicker last night.
Guy. 2: You mean they gave you a dueling harmonic?
Guy 1: Yeah, I guess.

Dueling Harmonica by The College Board April 14, 2008

Dellinger Special 

A Dellinger Special is a sexual act where one party shits in the shower while the other party watches. This is popularly done in BDSM and is perceived as a portrayal of dominance. This term is native to Trinidad and is considered slang.

P1: I heard Tays and Stella were going to do the Dellinger Special.
P2: No way, I've been wanting to try that

Dellinger Special by TrinidadSlang January 25, 2020

Duolingo Bird 

The bird who stole your family including your kids and doesn't feed then until you learn a diffrent language.

New York Times: A mysterious bird named "Duolingo Bird" might be the suspect of dead victims. This is because people didn't learn any new launguages in 1 day.

Duolingo Bird by packtober April 4, 2019

Duelling Turds 

The art of sliding a double ended dildo back and forth between two anal cavities using only farts and turds.

Did you hear Mike took both of those girls home last night?

Yeah rumor has it he stopped at White Castle for a crave case and then watched them play Duelling Turds!

Duelling Turds by SilkyMeatloaf July 22, 2019

Duolingo 

Duolingo is a website to help you learn a new language right? Wrong! Duolingo is practically torture. Watch out, the Duolingo bird looks cute and friendly, however it is a possessed demon. If you miss your lesson the bird will haunt you until you fall on your knees and beg for mercy. Don’t even try to skip your lesson two night in a row... unless you want to end up like Billy, we don’t talk about him. Anyways if you want to learn a new language and you aren’t afraid of being massacred by a “harmless” bird try Duolingo out today!

Me: one night of no French is fine
Duolingo Bird: you missed your lesson... you know what that means
Me: what’s that noise *blacks out*

Duolingo by I like avocados November 2, 2019