crack ass of dawn
The early morning light of day. Too early to wake up especially after an all nighter.
the guy next door decided to mow his lawn at the crack ass of dawn, doesn't he know its Sunday?
ass-crack of dawn
really early in the morning.
I had a flight to catch, so I had to wake up at the ass-crack of dawn.
ass crack of dawn
Redonkulously early in the morning. Often it is still dark out. Commonly used when one must wake up early after a night of drinking, or getting up to go on a trip. Also can be referred to "Oh dark hundred"
Person 1: "Dude, what time do we have to get up tomorrow?"
Person 2: "The freaking ass crack of dawn."
Person 2: "The freaking ass crack of dawn."
ass crack o' dawn
The very early portion of the day - around or before dawn. Derived from the term "crack of dawn."
"Man, I had to get up at the ass crack o' dawn to bring my mama to the airport for a 6am flight."
Beatrice got up every morning at the ass crack o' dawn to milk the cows.
Beatrice got up every morning at the ass crack o' dawn to milk the cows.