The phrase comes from 'Jizz in My Pants,' the SNL Digital Short by comedy trio The Lonely Island that premiered in December 2008. Performed by Andy Samberg and Jorma Taccone as clueless R&B singers, the sketch and its official music video became one of YouTube's earliest viral hits. The title line turned into a standalone punchline, quoted and remixed across forums, Vine and TikTok. Its blunt absurdity keeps it alive as shorthand for embarrassing overreaction.