The 'Patrick Star's Voice Is Sans' meme stems from a popular internet theory suggesting that Patrick Star from SpongeBob SquarePants and Sans from Undertale share an uncanny vocal resemblance, particularly when Patrick's voice is slowed down. This crossover theory gained traction on platforms like YouTube and TikTok, where fans edited clips of Patrick’s iconic lines over Sans’s dialogue or music. The meme typically highlights the absurdity of connecting a goofy sea star with a fourth-wall-breaking skeleton, often used to satirize deep-dive fan theories or to celebrate the overlapping fandoms of classic animation and indie gaming.