Bulma gets a squeeze of his hand against her knee for that bit, not hard, just enough to make her jump for her teasing as he calmly sips at his coffee as if he hadn't done that. "He doesn't use it enough sometimes." Considering they are his parents, this Trunks was rather reserved and quiet for the most. Who knows how that even happened. Their son that they raised together was a far different story, he very much was like his parents in both attitude and volume.

Then a thought as Bulma continued on, Vegeta starting to frown a bit along with it. "Do you think Bulla has someone?" Because... he's not sure how he feels about that, similar to how Bulma did about Trunks. He's used to her being so tiny, was still getting used to her being such a fully fleshed out person here, so being able to consider the fact she may be dating on top of that all... it brought Vegeta's brain to a stop.