Up the Sandbox (1972)

"What's Barbra up to? Up the marriage trap. Up the revolution. Up the Zambesi River. And up to something surprisingly wonderful."

Bored with day-to-day life in New York City and neglected by her husband, a young wife and mother slips into increasingly outrageous fantasies: her mother breaking into the apartment, an explorer's demonstration of tribal fertility music at a party causing strange transformations, and joining terrorists to plant explosives in the Statue of Liberty.