[Lazamataz]

When I was in high school, we used to ‘book’ places. That meant to go somewhere in a hurry. Haven’t heard the term in 30 years.

Slang words change. Nobody uses “groovy” any more.

[kanawa]

Can it be the sorry sun is rising
Guess it's time for us to book it
Talk about the famous road not taken
In the end we never took it
And if somewhere on the way
We got a few good licks in
No one's ever gonna know
'Cause we're goin' out of business
Everything must go

from Steely Dan Everything Must Go

[nopardons]

To “book it” used to mean to leave some place in hurry. :-)

[Right Wing Assault]

Taught in all black (boolack) school in the 70s.

Black kids in great lakes area would say, "I be fittin tuh book!" or "I fittin tuh book" meant to leave fast. Comes from booking a flight. "Fittin tuh" became a smoother version of "fixing tuh" (getting ready). Fixin sounded too wyatt. (white)

They also said when asked where someone went, "He left on out." or "He done left on out." Not sure if these mean the same thing, but I think the 'done' version meant he's been gone for a longer time.

"Mofo" of course, is what they called me when they were not happy with me.