Vegeta really didn't think much of the noise, and just tried to go back to bed. But he just couldn't get that 'thump' off his mind, tossing and turning wondering what had caused that sound. He still remained in his bed, to stuborn to walk out into the hallway, or maybe just too tired.
but finally the suspence go to him, and he just couldn't help himself, if he ever wanted to fall asleep. He just had to know what that noise was.

My Message to the World