Hard Knocks is a term used to describe a difficult and often harsh learning experience. BOPS stands for 'Bangs on Pots and Pans, ' which is a form of percussion music. SLAMS stands for 'SLAMS the Door, ' which is a phrase used to describe a sudden, loud noise. RAPS stands for 'Rapidly Accumulated Points, ' which is a way of scoring points in a game. Finally, SCHOOLOF stands for 'School of Hard Knocks, ' which is a metaphor for a difficult learning experience.