[He makes a dismissive 'pfft' noise - of course that's not what he's doing, even if would be had she actually had icing on her face.]

I got it. I got it.

[Pietro brings his thumb back too fast, to lick off nonexistent icing that Wanda won't be able to prove wasn't there. Pushing his chair away from the table, he stands, leans down to kiss the top of her head, and returns to the bedroom.]

I'm getting dressed, then I have something for you too! Don't think I'm not three steps ahead of you planning surprises!