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a der is slang for giving head. Used in conversations where the parties describing the act use the word as a substitute for the actual word, usually in mixed company.
Scene: at a crowded party

Candi: Did you see Jonathon over there?

Cyndi: Sure, I just got done giving him a der in the bathroom.
a der by jack3684527 July 12, 2006

A der der der der 

Umbridge (from A Very Potter Sequel) laughs like this.
A DER DER DER DER

Diddle a der 

This is a generalized saying that can be used at the end of any sentence when trying to summarizing any explains. It gets addictive and you will find yourself using it more than you should. A great way to finish any sentence when you can't be bother explaining the whole story to others. Could also be spelt {Deddle a der}.
I went for a night out with the girls and it was like you know "Diddle a der". I picked the kids up from school then went to the shop then you know Diddle a der.
Diddle a der by Belinda Jane February 21, 2019

Ding-a-derry

A state of celebration upon acquiring a brain.
"I would dance and be merry, life would be a ding-a-derry, if I only had a brain." -Scarecrow

Berp a derp derp 

A phrase used to express emotion, typically confusion or happiness.
Suzie: "I just love ice skating!"
Johnny: "Berp a derp derp! What?"
Berp a derp derp by YoGrannmotha August 28, 2010

Pulling a Derya 

The act of a girl dumping her boyfriend shortly after a dance such as Homecoming/Prom.
Yo man I heard she was pulling a derya the entire time with you?!
Pulling a Derya by Jack Oth November 25, 2013
More from Urban Dictionary

briefcake 

"Did you check out the briefcake in courtroom C?"
briefcake by Ben Frey April 6, 2006
Word of the Day on November 3, 2026
Brought to public attention by Bob Woodward and Carl Bernstein in the book on the fall of Richard Nixon, All The President’s Men, ratfucker was Nixon’s term for a political operative who sows chaos among opponents; an agent provocateur. It is thought to have originated among campus political rivalries at USC, and seems to have some usage in the US military.
Along with Nixon’s other ratfuckers, Roger Stone caused fights at otherwise peaceful Democratic Party protests to generate a false narrative that the Democrats were violent and dangerous.
Ratfucker by Ricky Ramjet November 2, 2017
Word of the Day on November 2, 2026

countrypolitan 

Term used to describe someone who is a mix of both rural (country) and urban (metropolitan) lifestyles/upbringings. He/she is typically equally comfortable in both settings and is able to seamlessly slip back and forth between the two, appreciating the characteristics of each.
That ol' gal of mine drives the 12 lane freeway during the week and a John Deere on the weekends. She likes opra and the Grand Ol' Opry. I love them countrypolitan women.
countrypolitan by MOChick November 7, 2006
Word of the Day on November 1, 2026

Witch Bath 

A bath consisting of a variety of slats, oils, soaps or any other added ingredients such as fruits, milks, herbs or any other spices for health or beautifying benifits.
She brought home alot of stuff and took it to the bathroom. She must be taking a witch bath.
Witch Bath by carnieboy30 October 26, 2020
Word of the Day on October 31, 2026

kinktober 

An excuse for people to write porn with different types of kinks throughout the month of October.

Smut Fanfiction
That chick doesn't write often but when she does, its for Kinktober.
kinktober by Kinkiest July 12, 2018
Word of the Day on October 30, 2026
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