Rugrats (1991)

S2E24 The Inside Story

Chuckie accidentally swallows a watermelon seed, leading the babies to pretend they’re exploring inside him to retrieve it. Meanwhile, Angelica schemes to grow the seed, hoping it will cause Chuckie to explode. Tommy intervenes to thwart her plans, and they manage to get the seed back. However, in a surprising turn of events, Spike ends up eating the seed at the end.