Shawn Wayans just finished watching the new Eddie Murphy documentary on Netflix ... and he's speculating on what it would look like for Eddie to return to standup comedy. We caught up with Shaun Tuesday at LAX, where he told us ... "I think he'd have no problem doing it once he commits to doing it. The only difference between him doing it now and him doing it back in the day is he had time to develop his ideas without it being exposed to the world." Shawn explained that starting out on obscure