He shakes his head at people who assume that all the wrestlers are friends .
When you get to the top level of wrestling , it 's a cut - throat , back - stabbing business , Duggan says .
Duggan shakes Duggan 's head at people who assume that all the wrestlers are friends .
When you get to the top level of wrestling , it 's a cut - throat , back - stabbing business , Duggan says .