[Midousuji presses a laugh against his fingertips and rolls his eyes away, seeming delighted by Waver's awkward, stiff discomfort.]

Oh, don't worry, you needn't convince me, [Midousuji jeers. he waves his hand dismissively.] You don't seem the athletic type. I'm not trying to sell you anything.

I was simply...reciprocating your engagement that you initiated, [he explains through a mean smile, fingers curling at his chin as his eyes narrow.] which is kinda funny. Engaging an obvious sales person with no intent to buy. How gross.