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

18 40

51 20

34 40

43 44

16 40

10 0

19 41

11 20

36 47

32 43

28 42

13 20

44 45

9 20

12 41

47 42