Teacher was teaching Mahabharata to 6th std students...
"Kans heard Devaki's 8th son would kill him., So he put Devaki & Vasudev in prison.
1st child was born. Kans killed it by poison.
2nd Kans killed by sword.
3rd was born...................
At this point a boy raised his hand for a doubt.
The teacher asked What?
The boy said "If Kans knew that the 8th son would kill him, why did he put Devaki & Vasudev in SAME jail?"
Teacher fainted !
Generation gap !
but common sense !