Kacau = Disturb ???!!!

one day............. in a lab.... there were a class of student carry on the experiment.....
n the teacher explain the pocedure....

cikgu XX : fisrt u all must sediakan the apparatos n materia.....(apparatus n material)....
all student : ok.......... no problem .. cikgu...
cikgu XX : then ..... kamu semua put the XX chloride into water.... then disturb it....
student A : apa??!!! cikgu ... mana boleh "disturb" tu????
cikgu XX : sorry la... dlm BM cikgu guna kacau..... then dlm ENGLISH bukan "disturb" meh???
all student : =.=

p/s : in bm ... use "kacau".... but in english should be "stir".....

-this story by my tt techer Mr.TTT-

- edited by me-