This happened in Chemistry:

Student: STOP TOUCHING MY PERIOD.

Other student: :0 ooooo!

Student #3: Shut up!

Teacher: O-O

Student: HE'S TOUCHING MY PERIOD.

Me: x'D I shouldn't laugh.

Student: HE'S TOUCHING MY PERIODIC TABLE.

Everyone: ...OHHHH!

Student #3: xD *touches the period table again*

Student: DX< STOP TOUCHING MY PERIOD-