"There are kinky wizarding sex parties?" Now he feels left out... he has to wonder if they have them back home or something. Probably, actually...

He shifts a little bit at the question, enough to face Draco properly with a hint of amusement in his expression. "Mhm... I definitely enjoy a little fun now and again though, sure."

And okay, he might be walking into a hex or a slap to the face or something right now, but when Billy lets his eyes drift back around the bar, he drops his free hand to rest lightly against Draco's leg. He's already made some questionable decisions -- what are a few more? There's a cute guy talking sex masquerades next to him and they've both had who knows how much to drink at this point...

Feels like an opening.

"What sort of fun are you looking for tonight anyway?"