The answers to the clues below will have something in common.

1. What the Big Bad Wolf did
2. Where you can find experimental theater
3. County law enforcement chief's headquarters
4. Certain plush toys
5. Certain flavored candy
6. Employees who get the job done
7. Without preparation

Answers:

1. Huffed and puffed
2. Off Off Broadway
3. Sheriff's office
4. Stuffed giraffes
5. Coffee toffee
6. Efficient staff 
7. Off the cuff

Both words of each answer contain two consecutive F's. 

Credit: Doug Peterson (#1-4)