The 60's 
It was a hot Saturday evening in the summer of 1960 and Fred had a date with Peggy Sue. He arrived at her house and rang the bell.

"Oh, come on in!" Peggy Sue's mother said as she welcomed Fred in. "Have a seat in the living room. Would you like something to drink?  Lemonade?    Iced tea?"

"Iced tea, please," Fred said. Mom brought the iced tea.

"So, what are you and Peggy planning to do tonight?" she asked.

"Oh, probably catch a movie, then maybe grab a bite to eat at the malt shop, maybe take a walk on the beach..."

"Peggy likes to screw, you know," Mom informed him.

"Really?" Fred asked, eyebrows rose.

"Oh yes," the mother continued. "When she goes out with her friends, that's all they do!"

"Is that so?" asked Fred, incredulous.

"Yes," said the mother. "As a matter of fact, she'd screw all night if we let her!"

"Well, thanks for the tip!" Fred said as he began thinking about alternate plans for the evening.

A moment later, Peggy Sue came down the stairs looking pretty as a picture wearing a pink blouse and a hoop skirt, and with her hair tied back in a bouncy ponytail. She greeted Fred.

"Have fun, kids!" the mother said as they left.

Half an hour later, a completely disheveled Peggy Sue burst into the house and slammed the front door behind her.

"Twist, Mom!" she angrily yelled to her mother in the kitchen. "The Twist, Dammit!  It's called the Twist! "