Stunt Double Play

Human flies to a parapet cling
Way up high in the air they will swing
And the feats they attempt
From repeats are exempt:
They could die, or end wearing a sling.

Image: Nick Cravat and Burt Lancaster in The Crimson Pirate (Robert Siodmak; 1952). Cravat and Lancaster created an acrobatic act called Lang and Cravat in the early 1930s, and worked in various circuses and in vaudeville. Cravat co-starred with Lancaster in nine films.