The 'You Wanna Have Sex?' meme stems from a scene in the 2024 Prime Video series Fallout, featuring the protagonist Lucy MacLean and the Brotherhood of Steel squire Maximus. In the scene, Lucy, raised with the clinical and pragmatic social norms of Vault 33, bluntly offers to engage in procreation with Maximus as a matter-of-fact activity. The meme quickly went viral due to the extreme contrast between Lucy’s earnest, naive delivery and Maximus’s visibly confused, shell-shocked reaction. It is widely used to illustrate moments of extreme social awkwardness, unexpected propositions, or situations where someone completely misreads a social cue. It has become a staple for fans to highlight the 'Vault Dweller' perspective meeting the harsh, bewildered reality of the surface world.