- "Because we live in society that's dictated by the male gaze. I want to control the narrative of feminism, okay? I want to show the world that a powerful, strong woman, she can wear anything! Be it a bikini, or a pantsuit."
- —Joanie to Joe West on her research.
Having received an ominous threat from her old boss, Amunet, Caitlin fears that her past time as Killer Frost may be back to haunt her. Felicity comes to Central City to help the girls celebrate Iris's bachelorette party, while Cisco, Joe and the guys take Barry out for a night on the town.
- This is the first episode in which Barry appears only as a civilian and not as the Flash.
- Felicity notes that Oliver got shot with an arrow the last time they had a wedding, referencing the events of the episode "".
- In mentioning how she's always wanted a sibling, Joanie notes how it happened "seven Doctor Whos later."
- Joanie tells Joe that she became a Doctor Who fan after the protagonist became a woman, referencing the current real-life portrayal of the Doctor by Jodie Whittaker.
- Cisco describes photos of baby Barry as having "Ewok-level chub," referencing the species of furry bipeds from the Star Wars franchise.
- When Ralph goes to describe the West house, Cisco suggests "bitchin," referencing Barry's encoded message in "".
- Harry refers to Ralph as "Disney," referencing the animated film company.
- Felicity references the Marvel character the Incredible Hulk in describing Killer Frost taking over Caitlin's mind.
- When Barry is drunk, he asks Joe why Rose didn't make room for Jack on the door, referencing the climactic scene of the 1997 film Titanic, and its protagonists Jack Dawson and Rose DeWitt Bukater.
- This is the first episode in which Barry gets drunk. Since regular alcohol has no effect on Barry due to his powers, Cisco had to concoct a special drink that could overpower his fast metabolism for his bachelor party. Cisco and Caitlin first did this in "", but the effects only lasted a few seconds in that instance since Barry had only one shot.
- ↑ Flash “Girls Night Out” Description: Emily Bett Rickards & Katee Sackhoff Guest Star - FlashTVNews
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