It's just a trailer. I'm confident that the full-length movie will delve much deeper into all the various Norris legends and mine them for significant (though probably not full, now that you mention it) comic effect.
Chuck Norris built a time machine and went back in time to stop the JFK assassination. As Oswald shot, Chuck met all three bullets with his beard, deflecting them. JFK's head exploded out of sheer amazement.
Originally Posted by TeamCoachellaHellYeah
this is fantastic news...we can all fist ourselves in peace now...