[Miss Lena please. She might see the faintest bit of red on his cheeks as he tries to move past his blunder.]

Yes, ah, well...with a laboratory such as mine, it can get messy at times. And since you're now part of this house, you will have your part of the chores in helping to keep things clean. [HE'S TRYING SO HARD. Also maybe small retaliation. He will be a kind father, but also a diligent one!!

...The place does look a bit dusty, huh.]