dunbin 

A phrase meaning it's "been done".

The two words, with alternative spellings have their first letters transposed and then are concatenated into one.

Used frequently on the b3ta forum.

- I'll just leave this here.
- dunbin
- Fail.

dunbin by Fragmeinster August 4, 2011

dunning-krugerrand 

A disparaging term for BitCoin, a play on the Dunning-Kruger effect.

He had a lot of Dunning-Krugerrands tied up in Silk Road when the Feds took it down.

dunning-krugerrand by d.w. January 1, 2014

Dunkin Dumpin Donuts 

Dunkin Dumpin Donuts is the act of anal penetration.

Juan was in the park playing Dunkin Dumpin Donuts with the street boys.

Dunkin Dumpin Donuts by I, Wreckerrr October 3, 2016

Marc Dubin 

Someone who is an old guy who pervs on kids during math.

Our math teacher is a real Marc Dubin.

Marc Dubin by Dick Nickelson June 15, 2017

sand duning 

Gay sex. The dunes are similar to butt cheeks

Bobby was exhausted from sand duning all night.

sand duning by Libraryguy April 3, 2011

Dunning

The process of attempting to steal action from someone else's post where the original poster is specifically looking to make a bet. Often occurs in social media but is always in poor taste. Named after the original individual who has since learned proper etiquette.

Dominick was always dunning on Mike's post trying to steal the action Mike was looking for.

Dunning by mofo004 October 27, 2020

Duning 

The act of brutally penetrating a person's anus with immense speed leaving behind a sandy texture and a dusty haze. Duning originates from Mongolia and anything except Jigglypuff can be duned.

"If these filthy casuals keep talking shit, someone's in for a rough duning session"

Duning by Feridon Hamidi March 1, 2019