On the miniseries, Connie Britton stole a scene playing Resnick (now a Real Housewives of Beverly Hills guest-star) explaining her friend Brown Simpson's allegedly naughty habit to her book publishers.
James Corden explained a censored version of the sex act Thursday night on The Late Late Show after guest Mark Cuban admitted he'd never heard the term.
"This was a shock to me, because I live in Brentwood, and no one said hello to me," Corden, 37, cracked as Britton and Cuban laughed. "No one said hello to me, period."
"People don't really say hello in Brentwood unless it's like this," said Britton, 49, with a sly smile.
For the few TV viewers who aren't obsessively watching American Crime Story, Corden delicately described the move.
"A man is asleep in his bed, and a lady would go in, and she would wake him up with her ... " he said, pointing to his mouth.
"Hello!" cried Cuban, 57.
The People v. O.J. Simpson: American Crime Story airs Tuesday at 10 p.m. on FX.