ABA CAD
When you're writing a multiple choice test and have no fuckin idea what any of the answers are, so you use "ABA CAD" to get through it. First question, you answer A, then B, then A, then C, then A, then D and repeat until the test is over. At least some of your answers will come out right (hopefully)
Rob: "shit man, I was ripping up a bar last night and I'm blanking on this test right now"

Milos: "Just use ABA CAD. That's always helped me push through"