“They go on the towel!”

“Nobody tells you that.”

And it involves, ahem, pubic lice.

Kristin Davis as Charlotte in ‘Sex and the City,’ Season 2 Epiosde 17 - Twenty-Something Girls vs. Thirty-Something Women

Kristin Davis as Charlotte in a very itchy episode of ‘Sex and the City’.Credit:HBO

Davis asked Bushnell, referring to the season 2 episode “Twenty-Something Girls vs. Thirty-Something Women?”

“But not the part about Charlotte getting the crabs.”

“Okay, okay,” Davis said, thinking the story was about to move on.

Sarah Jessica Parker as Carrie in a pensive moment from ‘Sex and the City’

Sarah Jessica Parker, Kim Cattrall, and Cynthia Nixon in the ‘Sex and the City’ episode ‘Twenty-Something Girls Vs. Thirty-Something Women’.HBO/courtesy Everett Collection

“I had this, whatever, crazy roommate,” the author recalled.

“And she was always having sex.

And she got crabs, and we shared an apartment.

Sierra Wright in ‘Survivor 47’ deleted scene

And guess what?”

“Did you get crabs from your roommate?”

Davis asked, anticipating where this was headed.

SEX AND THE CITY, Sarah Jessica Parker, Kim Cattrall, Cynthia Nixon, 1998-2004, episode ‘Twenty-Something Girls Vs. Thirty-Something Women’ aired 9/26/99, Season 2

Sarah Jessica Parker, Kim Cattrall, and Cynthia Nixon in the ‘Sex and the City’ episode ‘Twenty-Something Girls Vs. Thirty-Something Women’.HBO/courtesy Everett Collection

“I did,” Bushnell confessed.

“Oh, that’sbad!”

“Because they go on the towel!”

Candace Bushnell at a screening of ‘Sex and the City’ in New York City

Candace Bushnell during a happier moment.Ron Galella Collection via Getty

“Nobody tells you that.”

Ron Galella Collection via Getty

“No one does,” Davis agreed.

“Listen, people.

Is some important information.”

“I cant believe I just said that.

(Hi Candace!)

And she’s right.

According to theMayo Clinicyou can get public lice, commonly known as crabs, from a towel.

Don’t ask how we know this.