[ Alberto's wetting the end of his thread (by just sticking it directly in his mouth) to prepare it to go through the needle when Katsuki poses the question, and it catches him off-guard, freezing with the thread on his tongue and looking at Katsuki with raised brows. But after a second, he cracks a grin, amused by this question, and goes ahead threading the needle clumsily as he replies. ]

...Heh. I mean, do you, really? Ha! But no. We never did before. We do now, sometimes, but... That's just cuz we like it, ha.