Classmate #5: *Pokes your back*.
Me: Who was that?
Classmate #5: *Pokes Again*
Me: Who was that? Was that you? *points at Classmate #8*
Classmate #8: No it wasn't me.
Classmate #5: *Pokes Again*
Me: ONE MORE TIME I'M GONNA THROW THIS BOOK AT YOU?!
Classmate #5: *Pokes Again*
Me: *used a camera as a mirror* IT WAS YOU! *then starts to fight*