How do I deal with an annoying coworker?

[kddani]

To be honest... you work in food service. It is not a field known for high quality workers. If this is the worst you have to deal with, i'd consider you lucky.

Finish up the three weeks left then start looking for a new place to work. Get another job next year. One that has more decent people, one that pays better (i can't imagine campus food service paying much), and best of all, looks good on your resume and will give you some more real world office skills. Working in campus dining is doing nothing for you.