Then they'll overlook the chocolate soft serve dripping down the side of your cup. Box of wine. Get a Kroger card. If you get wasted and make an idiot out of yourself the first weekend, everybody will either love you or hate you. It's a pretty easy way to pick out friends - kind of like the greek system.
Toilets have a specific purpose.
So do garbage cans and your roommate's bed. Always be aware of their subtle differences. Though very effective, do not use ID cards to pop open locked doors. It wears off the magnetic strip. Everybody cries at the end of Mannequin when that Starship song starts playing.