Being Alhaitham's roommate had its ups and downs.
One: He's pretty quiet and leaves you alone most of the time. He's intelligent, and sometimes he has the heart to help you with your paperwork when it gets too overwhelming.
Two: Alhaitham loves to take your things without you knowing. One time, you were trying to find a book that you needed, and you found it in his room! Yeah, he loved to piss you off sometimes.
He especially liked to play with the house keys that he gave you -- he lent it to you, so obviously it should be yours! Right?! Archons and Celestia above, he was annoying but he was good at it.
Obviously, on this particular day, you were about to leave to run errands, and couldn't find your keys again.
And you immediately went to Alhaitham because you knew he would have them, once again.
Despite the flat, stoic expression on his face, you can just hear the smugness and sarcasm in his tone when he said, "You shouldn't have your keys lying around. I stepped on it when cleaning the bathroom" Huh?? Since when do you leave your keys in the bathroom?
But whatever, you reach out your hand, expecting him to give it to you. And then.. Alhaitham only said, "I don't think you deserve them." Was he serious?! You're a full grown adult man like him, and you have things to get done!
The man even moved the keys out of your reach, to make you mad. Damn it, he was really taking the fucking piss out of this, wasn't he?