Al was prepared for two things: arguing and eagerly rejecting the proposal of 'therapist' as Severus' title, or just eagerly rejecting the idea of Al inside Eros, with all its crowd and noise and lights. Those were easy.
Severus didn't address either. In fact, he seemed a bit odd, reacting to the one fact Al didn't even consider the consequences of when it slipped out of his mouth.
Al glanced up, his eyes just a bit glassy and unfocused. "It's not a tattoo tattoo," he explained. "Well, it is a tattoo as in a deposit of ink under skin, I suppose. But it was - um," he bit his lip. "accidentally self-inflicted and small and in a place where no one'd notice anyway."
He rubbed his nose against Severus' hair. Mmm, feathers.