Nemesis?

always get mad at the saying; He who laughs last laughs best, What if the laughter keeps us waiting? Then we would leave the rest to the supposed best. Though, who laughs last might not understand the joke, very good and well said. But what if the joker ends up being the joke? No joke would have been said. I heard of something called Nemesis, But circumstances made me doubt the existence, We just keep featuring In messes, And nemesis keep showing it negligence. One good turn deserves another, But it happens once in a blue moon. When your good has no reward, don't bother, You will get to understand soon. Even many walks like a free man, With loads of offences and bad deeds. While only few of good can, They with heart of gold.