Izuku: "5 chances. I gave you 5 chances." He says dangerously.
The 5 chances were all wasted, rather quickly.
Chance 1:
Izuku and Monoma were walking through the halls towards class, while talking. Izuku slipped and then 1-A's resident "Deku Squad" rounded the corner. Let's just say the situation didn't look good. Monoma was pushed away by Uraraka and Iida and Izuku was getting helped up by Tsu. He was annoyed because they didn't even allow Monoma to explain what happened. Its innocent till proven guilty.
Chance 2:
Sero took his notebook as a joke and looked through it. He couldn't understand any of it because it was in code, so he just hid it. Izuku spent 3 hours after school looking for it before Sero came back in the classroom, laughed at him, then pulled his notebook out from his desk and handed it to him. Saying 'Sorry bro it was just a prank', then walking off.
Chance 3:
Ashido wanted to pull a prank on Izuku and it wasn't a good prank. She convinced everyone except Bakugo, Shinsou and the teachers. Who didn't want to feel the wrath of Izuku. They talked to him all day while the others ignored him for this "prank". The prank of course failed because after school when Izuku was sobbing into Shinsou's shirt because the day brought up bad memories, Uraraka sent a text saying, "It was a prank, hope you aren't too mad".
Chance 4:
Another prank. This time he didn't know who it was, but they were REALLY testing his patience. Someone put really spicy sauce into his ramen. Which, he was allergic to this certain spice, so he had to go to Recovery Girl. Bakugo realized what happened and brought him some freshly made ramen. Which quelled his rage for the moment.
Chance 5:
The straw that broke the camels back. Izuku was just chilling and then Bakugo got a little too heated. He didn't want Bakugo breaking anything so he told him to calm down a little. Bakugo forgot that he probably shouldn't yell at him right now so he yelled a few things and then he snapped. Everyone was in the common room at this point since it was close to dinner.
Izuku: " 5 chances. I gave you 5 chances." He says dangerously. "You all done fucked up now." He says as he grabs the frying pan next to him.
Let's just say everyone in that class went to Recovery Girl with a big bump on their head. By that I mean he gave EVERYONE but Shinsou, minor concussions. Shinsou escaped the wrath by not being annoying.