Mha - a machine

You are a student of class 1-A in U.A.
One day, everyone was hanging out in the dorm common room and doing whatever.
You were sitting in the kitchen and doing whatever.
Suddenly Denki pulled out one device which looks like an computer.
Denki: "Hey! I found this! I think Aizawa-sensei left it! Wanna see what it is?!"
Mina: "I am in!"
So they started trying to figure out what it is. So they found it was a device that can tell if you are lying or telling truths. There was a helmet like thing that you put on your head and the computer will see if you are lying or telling a truth.
So they decided to use it! And they thought who would be most quiet or silent one, so it was happened to be you!
So now they are heading to kitchen to ask if you wanna try that out.