It is the cancer of happen. This was originated by Charlie Sheen in his famous "winning" interview. Nike's slogan is not "Just try it" but "Just do it."
Jim: "If you say that you Can't do it Rupert, then you have cancer."
Rupert: "I just Can't do it Jim. I just Can't."
Jim: "Rupert, Nike's Slogan is not "Just try it" it is "Just Do It," so just pick yourself up and go out and face your fears and concur them."
Rupert: "Thanks Jim!"