Pizza Raider

It appears there is an individual who comes to a lunch meeting solely for the purpose of acquiring pizza. That part I'm okay with as a lot of people come to lunch meeting solely for the purposes of getting pizza. It just seems tactless to me when that person gets 8 slices, eats 4, then leaves in the middle of the meeting every time. Could you at least pretend to be interested in the material being presented?

The goofy things I see people do.