Breaking the Glass One of the many ceremonial events that occur during a Jewish wedding is the "Breaking of the Glass". Often performed at the conclusion of the ceremony the groom will place a glass (or light bulb for easy breaking) under a cloth or in a bag on the ground and crush it with his right foot. After breaking the glass friends and family will yell "Mazel Tov!" meaning "Congratulations" or "Good Luck". These Simply Charming mazel tov bags allow for the newlyweds to keep their broken glass as a wedding keepsake for good luck and memories.