Except it's a men's store and so Yuuri isn't thinking about images of stockings at all and is instead pretty sure Viktor just purred that out about socks and he's really pretty confused about that. But Viktor purring out anything at all with his hands on his ass is going to be sexy. Besides, Viktor's always clearly had a thing for his feet, so it doesn't seem weird, he just misses the point entirely.

"I would think a shoe store next time would be better," he grants, which is it's own little prize, since he's very clearly agreeing on a next time. And then, warmer, incentive to please get them out of their clothing right now thank you, "I think you'd better be careful, though... You're going to get me used to you spoiling me."

It is definitely not a threat. It's definitely a lot more like a gift.