6 teacher and thief puzzle.

Teachers
While going to School
One thief steals a chain

Telugu teacher
Donga Donga,

Eng teacher
Thief thief,

Hindi teacher
Chor chor,

S.S teacher
Samaj gataka,

Maths teacher
420 420,

But
What ‘Science’ teacher screams

Scratch your brain.. and write your answer in comments