Nothing is so embarrassing as watching someone do something that you said couldn't be done.

Nothing is so embarrassing as watching someone do something that you said couldn't be done.

Nothing is as embarrassing as watching your boss do something you assured him couldn't be done.

Nothing is as frustrating as arguing with someone who knows what he's talking about.

We are all born into the world with nothing. Everything we acquire after that is profit.

Never interrupt someone doing what you said couldn't be done.