There's only one rule for "Netflix and chill": practice safe, um, binge-watching -- because you don't want "Netflix and chill" to become "Netflix and child."
Luckily, we live in an enterprising world, so everyone is now selling "Netflix and chill" branded condoms for your viewing pleasure.
There's the 4-pack of condoms for $9.99 selling at Netflixandchillcondom.com, created by Pop Gallery store owner Kori Williams, there's Say It With a Condom's "Netfl!x And Chill Condom" and the slightly-more expensive option of a 3-pack for $12 over at NF and Chill, created by students at the University of Texas Austin.
It's really a (baby) booming market.
We can't seem to figure out what makes any of these different, so it seems it's up to you and your partner's preference in branding, website user friendliness and font choice.
Of course, the real decision here is what you will "watch" while "chilling." May we recommend X-Files? Narcos? Any iteration of House Hunters?
As long as you stay safe and keep a laptop charger nearby.
BONUS: A Netflix feature for couples who can never decide what to watch