help! i'm a photocopier for answers!!

you noe wat, i dun mind helping other people in their work or explaining stuf if i actually understand it and they don't . or comparing answers with them after they actually do it. However..... I CAN'T STAND PEOPLE WHO ARE TOO LAZY TO DO THEIR HOMEWORK THEMSELVES AND JUST WANT TO COPY!!! what am i? an answer generating machine? everybody has to do their homework themselves. why can't they just do it like all others?
"aiya, i dunno how to do la, can you save your answers for me??"
"have you finished your report ah? can lend me to copy ah?"
what the heck! you all have brains rite?
if you don't use them it could actually degenerate!!