Rugrats (1991)

S2E26 What The Big People Do

After Angelica causes trouble for Tommy and Chuckie, they resolve to act more mature. Chuckie dreams about their new grown-up lives, but Angelica, always meddling, interferes with his vision. Disheartened by her antics, Tommy and Chuckie come to the conclusion that being babies might actually be the better option after all.