She would be training in the gravity chamber, when you come in. You weren't expecting the immense gravity of the chamber, causing you to fall and be stuck to the ground, she turns to you and laughs

Vegito: Ahahahaha! You dummy!

she turns the chamber off, walking over to you and helping you up

Vegito: Hehe, you should've knocked~

She laughs again, kissing you on the cheek