[Vegeta looks at the man with the strange haircut (reminds him of Gohan as a child...) then back at Bulma, who is giving him that look. It's the one where if he agrees, she'll be especially pleased and do the things she's supposed to do, like cook him dinner and wash his training suits. It's also the one she gives before she loses her temper when he refuses.

He grunts in the back of his throat, obviously displeased, but seemingly reconciled with the idea.]

Fine. I can train some of the warriors here. Just make sure they at least know how to block or dodge some punches. I don't want to listen to them cry if they go home with just a few bruises.