Having a diddly dack is another saying for masturbation, like flicking the bean or jerkin the jerkin, you're having a diddly dack.
bob was in the bathroom having a diddly dack over fred's sexy ass.
He talks a lot of smack about computers, but he actually knows squat diddly about operating systems or programming.
A phrase similar to destroyed , ruined , wrecked, gg'd. Simply put, the "thing" the phrase is being directed to simply means it's done.
"look at this misses throwing up on george street, she's fucking done dog diddly done deaded
A word used to describe something that's good, great, fine, etc....
"Are you alright? That looked like a pretty bad fall."
"Yeah, I'm totally diddly."
A replacement for "damn"
Darn diddly squat I forgot how to take a bath, wanna show me how?