Swedish, bisexual twins, who are studying nursing and you've just broken a leg

Failing that, then its pretty much a lottery... they can seem OK the first few weeks, next thing you know they're kicking your door down in the middle of the night, trying to borrow a lighter of you for a giant bong that they've just spent hours building...

Be safe! get a poindexter or geek, who likes to do their work and is quite all the time - best place to hunt one down is outside the library at 8:30am waiting for the doors to open...