You go on a roadtrip with your friends and sing RENT all the way to your destination.
You have about 100 songs titled "Finale" on your ipod.
You buy a belt just because it says "off-broadway show" and only wear it on special occasions... you know, when you wear your I Love NY shirt or one of you show shirts.
You have a closet full of show shirts.
You have framed playbills hanging on your walls in your dorm.
When you hear someone playing Aida down the hall of your dorm, you get excited, walk down the hall (at 12:15 in the morning, while you are in pajamas) and have a two hour discussion about how amazing Broadway is.
When you went to NYC for the first time, you made sure to dance on 42nd street, sing on Broadway, and take photos of every marquee you could possibly see! :)
"A bird doesn't sing because it has an answer, it sings because it has a song." -- Maya Angelou