"It was for a marriage license." She didn't have to worry about things like money, in the end. Her parents enjoyed and approved of Vegeta (against all odds), and with the kids considered, none of them would go hungry or anything like that if something were to happen to her in an untimely manner. However.. she hadn't wanted to just let things go on principal and say they were married. Some parts of Bulma liked traditional things, though it really only came around marriage.

Not that she'd ever had reason to worry about Vegeta straying if they weren't married, but she did like buying herself a massive ring to flex on people with when they attended events.

"Because being a Briefs also has status! At least on Earth!" Hello, Vegeta? How many times had she name-dropped to get them into places to eat where they hadn't been able to get a reservation? How many others times has she flexed the name to get things that they wanted but may not have otherwise had access to? Anyway, she's distracted from proving the 'royalty' of her own name at the mention of a 'formal thing' for a wedding.

... The way her eyes light up probably means Vegeta is going to begin feeling even more dread, especially alongside the drunken flush of her face that won't fade for a fair few more sips of water...

"Well, I'd love to if it means we can turn around your luck with officiating!"