if something shows up, people can see it
Example: He didn't think they'd really expect him to show up at an air show in Mesa.

And then to show up and not know what you're doing, I think, is just really disrespectful and rude.
4:08Because you should be ashamed of yourself if you show up to work and you know everything that the heads of department had to go through and all the preparation and all the time and energy and approval.
3:54