"Brilliant! Never thought of the ribcage," Al answered approvingly, adding an enthusiastic kiss to the nearest part of Severus' anatomy, which rose up to meet him. He liked this version of kissing. Kissing with a different head involved, perhaps, but similar nonetheless.
"Mm, tried that. It was nice at first... not worth fainting for that long. I could've recited the entire Priapeia had I been conscious," Al declared with the tone of long-time professional, or as professional as one could manage to be while eyeing another professional's scrotum up close during such conversation and contemplating how best to take it into one's mouth and whether to suck, lick, or nuzzle.
Perhaps all three, but in alphabetical order. He tried just that, before moving on to repeat every variation of the listed gestures to the right, to the left, above, and below his originally-intended target.
Severus did want thorough.
Al's initial observations had determined the technique, of expanding the area of stimulation, to be a success, and not just in the predictively sensitive-to-stimulation upper location. Severus' right and left inner thigh, spread out like that, were highly responsive to any sort of oral contact, and running his tongue down along the entire length of perineal raphe had earned Al several interesting twitches.
Perhaps I should repeat the procedure from the beginning.