K.A.B.F
K. A. B. F is when your legs turn to jelly and your ass gets a free pass to the most awkward fuck ever.
He got K. A. B. F when he tried to run away from the principal.
She got K. A. B. F when her dog ate her homework and she had to present it in front of the class.
He got K. A. B. F after trying to do the entire math test in his head.