Either you think Owen Wilson is likeable or punchable. Doesn’t seem to be any in-between there. But he appears to have a tick. His go to word in his movies is “WOW!”
Probably just an acting crutch. Just like Brad Pitt’s need to always be eating in his movies in order to make up for his acting. Or how Matthew McConaughey makes strange noises in all of his movies.
Now we have a compilation of all the times Owen Wilson has said “Wow” in his movies.