Yvette welcomes brother and sister team, 12-year-old Nathan and 10-year-old Liv, to The Big Fib. In the Silly Warm Up Round, there are a lot of laughs for Max, a Stilt Walker afraid of heights. Our other Stilt Walker, Briana, has some advice about balance. Later, Yvette learns more about Nathan and Liv through a rowdy game of Me or You. CLIVE introduces the main topic, Venom, and tells a strange story about wanting his ears pierced. Cody is a Zoologist, who milks snakes, and Mande is a Scientist, who specializes in venomous snails. Mande claims the Cone Snail can kill a human being in a matter of hours, and Cody says he easily survived a snake bite from a puff adder. Both experts are shown a cute but venomous animal that's neither a snake nor a snail and have to identify it. Will Nathan and Liv be able to see through the venomous lies and find the fibber?