A tro person is someone who says that they are more and have more than they really have.
A tro person could also be the person that thinks he is cool and beefs with others and trashtalks for nor other reason than to look better and gain popularity
TRO is an abbreviation for "Time is Running Out" to express urgency to complete a task.
Bill has been saying since freshman year that he was going to throw a wild party. It is the end of Senior year one week before graduation. Bill still has not had a wild party.