Death by whoopee cushion
"The best Halloween costumes. The funniest pranks. An endless supply of chocolate fudge that looks exactly like dog poo. Most kids would love it if their parents owned a joke store. But twelve-year-old Manya isn't like most kids. She's not interested in the cheap laughs at Pranks a Million. She loves science. She wants to save the world. The only thing she finds even vaguely interesting about her parents' shop is the science behind the pranks. Af...