Boom Boom Boom Boom

In this episode, the contestants must: bring in the coolest thing they've found on a walk within 1km of their house, sink a bowling ball, snap, crackle and pop some things, spread generic yeast spread on something, and then clean it up and recreate famous scenes from history, using only four-letter words. There's also a thrilling tie-breaker involving honking a car horn as quietly as possible.