THREE RIDDLES

1. What does a yarn shop have to do with a louse and an oyster?
2. Why should you not iron your four-leaf clover?
3. What do a concert pianist and an athlete who doesn't get much playing time have in common?

Answer:

1. Knit and purl / nit and pearl 
2. You don't want to press your luck. 
3. They both spend a lot of time on benches.