a dilly doof is someone that is remarkably silly or stupid in a funny way. Take the old english word for remarkable, dilly and combine it with the german doof (short for doofus), or a stupid person, and you have a remarkably silly person, a dilly doof.
Think of the main character in the movie Elf, 'oh nooo, I am such a dilly doof'. A husband that forgets to put down the toilet seat, 'dammit I am such a dilly doof'. Guy locks himself out of his own car... mumbles 'dilly doof' under his breath.
Putting your hand in a condom, filling it with water, and then slapping someone.
Chick: Jo wouldn't give me his Snack Pack, so I dilly slapped him in the face.
A fun slang term used mostly by locals to refer to the metropolitan area of Dallas, Texas.
My friends and I are going to a bachelorette party in The Dilly Dally next week, it’s such a great place to party!
The opposite of Dilly Dilly.
See: /u/DillyDont
"Oh great, Karen is trying to come to the party...Dilly Don't."
It's when you tell your girlfriend to do the birdbox challenge, then you drop a moby huge right on her forehead.
Me and my lady did an epic Dilly Bounce last night!
This means to put that hoe on the floor and leave her there. Also can mean to quick scope a hoe.
Phil: What if she tries to have secks with me?
Dan: Tell her you don’t have sex on the first date. She keeps insisting, dilly that hoe, and run the fuck out of there.