'Let's Talk About Sex': Kate Walsh made her triumphant return as Dr. Addison Montgomery in Grey's Anatomy on Thursday with a sexually-charged episode

'Addy is back and better than ever!' In it, the world-renowned neonatal surgeon visited Grey Sloan Memorial Hospital to help interns create sex-education videos for teenagers alongside Bailey (Chandra Wilson) and Jo (Camilla Luddington)

Surreal moment: Addison was one of the many doctors who performed a TikTok-style dance in the lecture room while pointing to imaginary sexual health facts, which will be added 'on the screen later'

Learning from the best! Montgomery's moves were choreographed by none other than five-time Emmy winner Debbie Allen (L), who executive produces and plays Dr. Catherine Fox on Shonda Rhimes' long-running ABC medical drama

The 55-year-old SAG Award winner gushed to her 4.3M Instagram followers: 'The fact that I got to learn some dance moves from the beyond iconic @therealdebbieallen! [You] guys simply aren't ready for what we have in store for [you] tonight!'

BTS: Kate famously originated the role of Addison back in 2005 during the first season of Grey's Anatomy, and her spin-off Private Practice ran for six seasons spanning 2007-2013

To the rescue! And it wouldn't be Grey's without medical emergencies as Montgomery helps scared and pregnant teen Lucia procure the morning after pill, and a teen called Diamond suffers an ovarian torsion and needs surgery

Action, alright! Season 19 episode three worked as an aphrodisiac and ends with characters coupling off and getting busy - Owen and Teddy, Jo and Link, Amelia and Kai, Millin and Kwan, Adams and Griffith, as well as Mer and Nick