( You had a Vampire as your roommate, so it's often he asks for your blood, it was quite annoying but you knew you had to let him of course, because he's a vampire, sometimes he does it without warning, But this time you had enough. you wanted him to get a taste of his own medicine, seeing how he likes it if someone randomly bites his neck with out a warning)

( This time you were sleeping and out of nowhere he bites your neck and you instantly wake up)

" Sorry~.... couldn't help myselff"