There was a lot of stuff about sex, consent, and the lack of it, and promiscuity (and the lack there of) all over that episode. Like, from a bunch of angles, including:
Kurt being non-consensual tied up and tricked into making out with a guy.
All the girls want to be the virgin! Except Kitty, who says feels she’s closer to Mary Magdelene, and we know her history.
Santana said a toy a kid wanted sounded “molesty”. Also she was roofied at Lilith Fair? I mean, hopefully that didn’t mean sexual assault, but that’s certainly what it implies, unless I’m missing something?
Becky wants to force people to make out with her. Sam thinks she needs to be treated for sex addiction.
I am pretty sure there’s more, too, throughout it.
I think it’s always important to keep in mind when discussing consent issues on Glee is that none of these characters really know they matter a lot of the time. In “Vitamin D”, the nurse drugs them so much that they can’t remember their high-energy performances after they come down. No one is upset. No one knows they should be upset. Not Rachel, who’s been trained to threaten lawsuits; not Finn, about whom fandom seems to confuse privilege and empowerment; not Kurt, who has Burt Hummel as a dad.
Look at Blaine’s reactions to the Vaporub incident. Look at Sam and Artie reacting to Ryder’s disclosure in “Lights Out”. Look at the collective non-reaction to Brittany’s various actions concerning consent. Sue commands Santana and Brittany and Bree to seduce boys and they don’t react.