Vegeta was regretting promising to look after Trunks for the day, and he mentally berated himself for not asking his mother-in-law to take over.
Realizing that he couldn't train all day as Bulma would kill him for not taking proper care of his son, Vegeta decided to ask Trunks what he wanted to do, and the demi-saiyan had replied cheerfully that he wanted to go to the cinema.
So Vegeta disappeared to get changed leaving Trunks to bounce around the living room in excitement, yelling out different movies they could watch at the local cinema.
After deliberately taking his time just to wind up Trunks, he emerged from his and Bulma's bedroom, p