well you need to click buttons. If you tell Ciel that your name is Alois Trancy he does something hilarious. Tell Sebastion your name is Grell watch him become scared. Tell Grell your name is Bassy...
I just changes it to be if you say Sebastian instead of Bassy, because why would you call yourself that nickname if only Grell calls Sebastian that? (Sorry people named Sebastian who would actually call themselves Bassy)