singing a duet with the mayor 

To miss a person real or fictional

"I miss them so much I'm singing a duet with the mayor!"

singing a duet with the mayor by Dale Horgan September 2, 2021

Organ grinder’s duet 

The sound of two people having passionate sex.

I couldn’t sleep due to the organ grinder’s duet next door.

Organ grinder’s duet by 3hourtour June 1, 2024

organ grinder duet 

loud sex

I couldn’t sleep because of the organ grinder duet next door.loud sex

organ grinder duet by 3hourtour June 7, 2024

duetcris 

Famous tik tok influencer who makes duets and has over 125k followers on tik tok and just making people happy

duetcris duets on tiktok charlidamilos tiktok

duetcris by duetcris January 5, 2021

duetothefactthat 

A word for those who are in an argument and feel that "Because" just isn't smart-alecky enough and are too lazy to use the spacebar.
Alternatively, a word to defeat those who argue that "due to the fact that" is not grammatically correct.

Fortnite is an anime duetothefactthat it has bright colors and crap.

duetothefactthat by Midknight13 April 15, 2018

duetexting 

The act of singing a song back and forth with a friend via texting.

One friend texts "Three" and then the other friend texts back "is the magic number" followed by friend number one texting back "yeah it is!" Hey we rock at duetexting.

duetexting by CLASHRPH July 25, 2009

duetude 

when you're in the company of just one other person

as opposed to solitude

It's nice sitting here... in our quiet... duetude.

duetude by The Jen January 24, 2005