U did in ur free time your raped and u wanted to show 1a ur skills so u decide to make a rap for Mr Aizawa and 1a including all ur class mates and u and Aizawa and u added beats different instruments and yea then u recorded it and u made pictures of who's part is it and u said

You: guys I have something to show u

They all got curious so they waited for u to show them what u were so excited about and ur quirk is called hammer time and when u say hammer time u make a hammer appear in ur hands