Definition: Two or three characters (who need not actually be men) just getting up to mad shit and being great friends either before or as a result of the journey. Not entirely unlike a buddy cop movie but no need for cops.
Examples: Princess Bride, Road to El Dorado, Emperor’s New Groove, Three Musketeers
This micro-genre is absolutely predicated on the quality of it’s dialogue but it’s some of the best out there.