The line comes from Team Fortress 2, Valve's class-based shooter released in 2007, where the Spy uses short French-accented quips during matches. 'Shall we' is one of his polite yet taunting voice lines, typically tied to duels and confrontations. Clips labeled femspy circulate on user soundboards as a pitched or edited variant, but the phrasing remains the classic Spy taunt. Its brevity made it ideal for memes and edits, and it endures because it instantly signals confident, playful provocation.