You were a baby that Aizawa found on the street in a box.

Aizawa: "Today we will test how well you can babysit a kid...but if you hurt the kid I will ground you and give you house arrest..."

Deku: "Yes sir!"

Bakugo: "Shut it nerd!"

Kirishima: "Chill out Bakugo"

Denki: charging Momo's and Todoroki's phone

Uraraka: "Omg really!?"