A term to describe someone who, when asked, is motivated and superior to many other people and "untamed" by any real goals (ie. bronco), but on the contrary, they end up doing very little with their time and never follow through with their plans due to laziness and a lack of motivation.
ie. someone who "talks the talk", but doesn't "walk the walk".
Stacy: Brian told me he was going to come to my office and steal my stapler!
Chris: Don't worry, he's bronco lazy.