Disgusting Dave and the Bucketful of Vomit

Meet Dave. He's disgusting.At least, that's what his older sister thinks. But Dave knows better: he just wants to know how things work. Even things like burping and farting. And now Dave needs to turn detective and clear his best friend's mother from food poisoning charges. But he's going to have to get up close and personal with some vomit under a microscope ...