Trying to be punny

I wondered why the baseball was getting bigger. Then it hit me.
Police were called to a childcare centre, where a three-year-old was resisting a rest.
Did you hear about the guy whose whole left side was cut off? He's all right now.
To write with a broken pencil is pointless.
When fish are in schools, sometimes they take debate.
A thief who stole a calendar got 12 months.
We'll never run out of mathematicians because they always multiply.
The professor discovered her theory of earthquakes was on shaky ground.
The dentist and manicurist fought tooth and nail.
What the definition of a will? It's a dead giveaway.