What is On Da Book?
1.
a prepositional phrase used to describe time spent on
"I was lurkin' on da book last night and found a picture of my ex making out with a fish."
Girl 1: I wonder if that guy from Chem is available...
Girl 2: He is. He just broke up with Sherry who is in nursing school.
Girl 1: How do you know that...?
Girl 2: What? It was on da book.
See