Duallingus 

When two people are each positioned at a girl's vagina.
Usually one of them is licking the clit while the other tongues her ass.

No common, almost like a unicorn, fucking amazing, but rare to find/

Jessalyn was surprised when her boyfriend and his best friend agreed to preform duallingus on her. It was sure to be a fun night. One tongue on her throbbing pussy and the other in her gaping asshole

Duallingus by HandleBarsAre forDriving January 5, 2016

Dufalingus 

A dufus with a strong tongue game

Black Friday 2020 at dicks sporting goods was a breeze...i got two hours of sleep, went hungover and still managed to squeeze a lil dufalingus into my tight hairy Todo list while I was getting paid.

Dufalingus by Roobeer March 28, 2020

Dunglingus

When you give a girl analingus after she has a bowel movement.

My girl just got done dropping a steamer, then she bent over and I gave her dunglingus.

Dunglingus by lslslslslslslsl December 26, 2008

dualingus 

When two tongues are licking the same Vagina.

I love the way that Dave and Dave performed Dualingus on me, I came at least five times!

dualingus by TheDaves October 2, 2023

duolingus 

69

My favorite foreplay is duolingus!

duolingus by ampmdoubleshot January 11, 2021

dullingest 

Something that is very uninteresting/lacks the very most, or the least sharpest.

(Adjective for Dull.)

"This is the most dullingest activity in the entire planet!"

"My carving knife is next to the most dullingest thing ever!"

dullingest by Chukoloco08 February 19, 2022