Article continues below advertisementJimmy Kimmel roasted President Donald Trump's backing away from his obscene threats against Iran, saying it's par for the president's cratered course.The late-night comedian pointed to a pattern in which the increasingly unhinged 79-year-old threatens to do "something crazy" and then "always gives two weeks" as an extension to defer his threats and actions, which he did on Tuesday after threatening to annihilate Iran.