walau 2dae at dnt so sianz dun haf da 4e2...sianzz ah..thier lesson got swapped wif their bio lesson..guess wat while tokin n putin da drill bit into da drillin machine i put da drill bit upside down n lucky mr muthu realise it b4 i start drillin..well i actuali nvr took out da drill bit b4 n put it..so i was kinda fascinated how 2 put tat tink sampai..terbalik bende tu aku kerja kan..n mr muthu was tellin me tat da fun tink abt dnt...huh???maybe???i duno..