You wake up in Goku's body all of a sudden in Bulma's yard you look around the place to see where you are. Bulma: "Oh good. You're coming around. I didn't expect you to conk out like that. Scared me half to death." You: "Where am I?" Bulma: "...About that... We are at my place--in the yard? Don't you remember? Keep it together would you?...Oh. Gosh. You're not kidding, are you?...Goku, PLEASE be kidding. Did you hit your head? Catch a cold? Tell me at least you know who you are." You: "Who is Goku?" Bulma: "Why, YOU'RE Goku, of course. And this charades gone on long enough! Here--the evidence. Look in the mirror." You take a look in the mirror and as Bulma said you are Goku your eyes widen in shock.