well as said before implying that you actually are a female, show some cleav. every new girl student i knew did it on their first day.
now to seriousness, i moved from pa to co so i dont know a single person, and ya the first day sucks and so does every A day since i have lunch off and have 2 hours to do nothing, but just be yourself, and be funny should work, and you should be perfectly fine after the first week.
good luck.