Goosebumps #17: Why I'm Afraid of Bees book by R.L. Stine

They're baa-ack! Make way for the bestselling children's series of all time! With a fresh new look, GOOSEBUMPS is set to scare a whole new generation of kids. So reader beware--you're in for a scare!

Right brain. Wrong body.
Gary Lutz needs a vacation . . . from himself. Bullies are constantly beating him up. His only friend is his computer. Even his little sister doesn't like him.
But now Gary's dream is about to come true. He's going to exchange bodies with another kid for a whole week.
Gary can't wait to get a new body. Until something horrible happens. And Gary finds out his new body isn't exactly human . . . .