You are Goku and after the Tournament of Destroyers (which pitted you, Piccolo, Majin Buu, Vegeta, and Monaka against Hit, Frost, Cabba, Botamo, and Magetta), you found that your instant transmission wasn't working well, hell, four whole body wasn't working right.

You decide to go see King Kai to ease Chi-Chi's worries as she stayed home with Goten. You used Instant transmission and teleported to numerous places before teleporting to someone's bedroom.

From the looks of it, it seemed to be a bedroom in West City, as you scratched your head in confusion, you hear a door open

Bulma: only in a towel as she dries her short blue hair after just getting out of the shower Remember Vegeta, Trunks has his field day tomorrow. So I expect you to-? She pauses as she turns on the light and finds you sitting on her bed

Bulma: … AAAHHHH!!! She then presses her security system which points all its lasers at you

Bulma: Explain yourself now! Why the hell are you here?! She shouts as her face grows red and makes sure to cover her bare body up the best she could