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Diddly-o 

To be satisfied or mainly agreed by a subject. It is a halfway measure that is closer to the agreement side of things than disagreement.
Diddly-o by Johnny B. Good November 28, 2003

sticking the diddly-doo in the o 

Another expression for having sex. Abbreviated as STDDITO.
person 1: I walked in on my parents sticking the diddly-doo in the o
person 2: oh man, that sucks.

diddle-o 

mentally challenged or crazy.

an old London expression for someone either a bit simple or downright psychotic.

often found lurking in re-runs of "The Sweeney" or "Minder"
"Why is that bloke walking round in circles?"

"Dunno, I reckon he's a bit diddle-o"
diddle-o by Dougal474 October 26, 2006

Wake up in the morning feeling like O'Diddy

When one wakes up with a roaring hangover, typically next to more than one girl who could only be attractive after copious drinking.
Usually used for the day after St. Patrick's Day.
Fergus: That was some party last night, eh laddie?
Liam: Aye, but then I had to wake up in the morning feeling like O'Diddy!

son of a diddly 

Homer: Hey Flanders, your house is on fire!
Ned: Oh-- for crying out-- son of a diddly!
son of a diddly by dedweesel January 27, 2003

slobbing on the diddly

"Man it felt so good last night when she was slobbing on the diddly"
slobbing on the diddly by ayyslmao February 14, 2017
More from Urban Dictionary

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026
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