That little shit-eating grin stays firmly in place as he continues to drift. Clearly he still isn't inclined to say that yes, this time Phichit actually guessed right.

Of course, the smile fades a bit as the other continues.

"My father's not quite inclined to be swayed by something like that. Mom...well. she likes you but maybe approaching it with them a little more traditionally would be safer." Words he really never thought would come out of his mouth, but he doesn't want to ostracize them both with this. He perks back up after a moment though. "We can announce it to the rest of the world with a show though!"