The 'Baby Girl? Daddy's Home' meme, often featuring a distorted, peanut-shaped version of Sans from Undertale known as 'Peanut Sans,' is a pinnacle of modern shitposting. The meme parodies 'alpha' pickup lines and cringey romantic tropes by pairing them with a bizarre, low-quality character design. It gained massive traction on TikTok and YouTube, where the audio of a deep-voiced man saying the phrase became a backdrop for surreal and unsettling imagery. It is primarily used to evoke a sense of 'brainrot' or ironic humor, mocking the hyper-masculine aesthetics of the late 2010s while utilizing the enduring popularity of Undertale fan-content.