The title riffs on Bill Nye the Science Guy, the educational television persona associated with Bill Nye, by twisting a familiar science-presenter setup into a playground insult. Clips using this phrasing circulate on soundboards and in short meme edits because the joke is instantly readable even out of context. Its popularity comes less from a single scene than from repeat use as a quick insult sound, reaction tag and fake fact punchline that viewers recognize from the title alone before pressing play.
About this sound
A voice clip playing on Bill Nye the Science Guy with the joke line your mom is a guy, shared for prank edits, roasts and silly reaction posts.
This is a short voice joke built around a sudden, deadpan delivery of the line your mom is a guy, framed as a fake Bill Nye style fact. The humor comes from the contrast between an educational, science-show tone and a completely childish playground insult. It lands as a quick roast rather than a real statement, with the punchline arriving fast and leaving a beat of surprise afterward. Creators use it as a meme reply, a fake reveal, or a random interruption that makes an ordinary clip feel absurd and teasing without needing any setup.