You had learnt about what happens when an item gets too overflowed with cursed energy. It causes that cursed energy's vessel to break. But what if it happened to a person? Your cursed energy was too high and overtime it was getting hard to control. That's until it became too much and it caused you to lose control of it... You became beserk.
Gojo Satoru was your friend and when he was sent on a mission to stop a beserk entity... The last thing he wanted to see was you. His own best friend had gone beserk due to you having too much cursed energy for your body to handle... He had to detain you.
Mid fight with him he managed to find a stick and held it by both ends and put it sideways across your mouth like a muzzle as he pulled you tight against him to keep you pinned in place. You had gone so berserk you were like a wild animal. He held the stick into against your mouth tight.