What is the missing number?

I don't have an attitude problem. You have a perception problem.
If swimming is so good for your figure, how do you explain whales?
I loathe people who keep dogs. They are cowards who haven't got the guts to bite people themselves.
On the keyboard of life, always keep one finger on the escape key.
I have not yet begun to procrastinate.
I don't suffer from stress. I'm just a carrier.
Tell me what you need, and I'll tell you how to get along without it.
Someday we'll look back on all this and plow into a parked car.