Noodle duecing 

When a male is jacking off while taking a dump.

Dude, my wife caught me noodle duecing tonight!

Noodle duecing by Secretuser123 June 2, 2013

Noc Duecing 

When you've sat on the toilet for so long the bathroom light sensor has timed out, leaving you to finish dropping a Duece in the dark. This mostly takes place at the office or public establishments. Noc is short for nocturnal. By the time you're ready to wipe you can see like a jaguar in a pitch black bathroom stall.

"I haven seen John in about 30 minutes".

"I bet he's Noc Duecing. He's got some serious IBS"

Noc Duecing by Doctor Stuff June 23, 2016

deucing it up

The act of taking one or more epic dumps. Usually, this term is used when you're making multiple trips to the throne for various reasons like, taking a laxative, getting bubble guts from eating White Castle, or doing a purge or a cleanse.

I was constipated after taking some antibiotics, so I took some milk of magnesia and I was deucing it up for like 9 straight hours. I filled that cup to the brim and shot it down like bourbon.

deucing it up by Davester75 October 14, 2013

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

duceing 

The act of expelling excrement from ones anus, usually on a toilet.

I was just in the bathroom duceing when I realized there was no toilet paper.

duceing by McMonkeyPunch March 22, 2009

micro deucing 

The practice of producing constant, brief, crumb size deuces, not to rid the bowels completely, but to feel more focused, creative, and present.

Studying for this exam is really getting to me, I think I might start micro deucing during the next lecture so I can focus more on what the prof has been saying.

micro deucing by thatguyinshorts October 27, 2020

Dueling Batwings 

Slang Lesbian sex. like scissoring

I Walked in on these lesbians dueling batwings, it was the time of my life.

Dueling Batwings by brenten kelly January 17, 2008