squat diddly 

NOTHING

He talks a lot of smack about computers, but he actually knows squat diddly about operating systems or programming.

squat diddly by Kolchak Jones March 8, 2017

diddly squat

nothing

You know diddly squat about anything.

diddly squat by Anonymous June 16, 2003

jack diddly squat 

the equivelent of nothing; something that amounts to nothing

Vikings aint got jack diddly squat on ninjas!

jack diddly squat by ninjamann13 June 26, 2007

diddly squat

diddly squat ain’t but nuthin’ at all

I had DIDDLY SQUAT to do with selling all that gay pornography to those terrorists!

diddly squat by BillieJeanIsNotMyLover August 19, 2019

diddly-squat 

a cuter way of saying f* sweet all nothing

when you father was an engineering student, and you are in a private high school and playing guitar in the music band, if you are not a talented a carrot in god's potato field, you have done diddly-squat with your private education.

diddly-squat by Uncle Dimma December 11, 2014

Diddly squat

A unit of currency, worth a predicted £525m a week after brexit.

According to Boris Johnson, one Diddly Squat will be worth £525m per week after Brexit.

Diddly squat by Thrifty Amoeba September 3, 2018

diddly squat

A style of dancing which which includes a short crouch while the musician is playing the fiddle.

I never did see so many of them all doing diddly squat at once.

diddly squat by AyStyle April 12, 2015