What gets longer when pulled, fits between breasts, slides neatly into a hole, has choked people when used improperly, and works best when jerked?

14 0

20 30

17 30

9 0

9 10

9 0

34 31

11 0

6 30

18 32

3 0

21 33

14 10

19 10

4 30

6 0