Body Switchers from Outer Space: R L Stine's Ghosts of Fear Street #14 (Ghosts of Fear Street)

Come back with my body! Will "the Spill" is a total klutz. He'd give anything to be Chad -- the most popular kid in school -- just for one day. Chad never trips, or falls, or drops anything. Then Will gets his wish. Chad says he's got a body-switching machine. And he wants to switch bodies with Will! Will decides to do it. And it works. He loves being Chad -- until he finds out Chad's horrible secret. And realizes he's trapped in Chad's body forever! Will would give anything to be Chad, the most popular kid in school. When Chad says he's got a body-switching machine Will decides to go ahead and swap bodies with him. Will loves being Chad. That is, until he discovers Chad's horrible secret, and he realizes he is trapped in Chad's body for ever! Klutzy young boy Will who would do anything to be like Chad, the coolest kid in school. So when Chad tells Will he has his own invention (a body-swapping machine) in his house, he jumps at the chance to make the switch — only to regret it when he discovers that Chad is an extraterrestrial. Wishing that he could switch places with the coordinated, popular Chad, klutzy Will is astonished when Chad, who owns a body-switching machine, proposes a trade, but when Will learns a scary truth, he is already trapped in Chad's body. Original.