Meet Merton #3

Merton borrows a tape recorder from Professor Widgett under the pretense of capturing animal sounds, but his scheming friend convinces him to sneak it into the girls' locker room instead. When Merton's plan backfires spectacularly—leaving him humiliated after overhearing exactly what the girls really think of him—he swears off being the school's punching bag, only to discover that his friend's carelessness has created an even worse mess.

Merton's got a blind spot for the obvious—he notices every tiny detail about a girl's car but completely misses her brand-new Italian hairstyle, leaving her frustrated and determined to make him pay attention. When her father forces Merton to take her out to the Tunnel of Love to cheer her up, Merton brings along what he thinks is the perfect prop to match the romantic Italian setting, with hilariously awkward results.

Merton and his pal Calories dream up a scheme to impress Major Motors' visiting executive with a revolutionary "magic pill" that supposedly runs cars on plain water—but their hastily concocted formula turns out to have a few unforeseen wrinkles. When the demonstration goes sideways, the boys find themselves scrambling to recreate their mysterious invention, only to stumble onto something they never expected.