ABACADABA
Desperate means used when you have not studied for a test. On a scantron, you pull the ol' "ABACADABA" and fill in those letters accordingly in hopes of passing the exam.
Example:
man 1: How do you think you did on the exam?
man 2: I didn't study, I pulled the ol' ABACADABA.
man 1: How do you think you did on the exam?
man 2: I didn't study, I pulled the ol' ABACADABA.