As a standalone phrase, oh that's hot has circulated online as a reusable reaction clip rather than a line tied to one widely agreed scene, which is why it travels so easily between edits. Creators lift the audio and drop it over unrelated footage, letting the flirty, exaggerated tone do the joke. It became a staple of short form meme pages and soundboards because it is instantly understood, works without context, and can be aimed at people, food, cars, outfits or transformations for comic effect every time.
About this sound
A short voice clip of someone exclaiming oh that's hot, used as a funny reaction to attractive people, impressive moments or spicy food in memes.
A voice leans into the line oh that's hot with drawn out, over the top excitement, turning a simple compliment into an instant punchline. The delivery is playful and a little flirty rather than serious, with the emphasis landing hard on hot so the reaction feels bigger than the moment deserves. That exaggeration is why it works in edits, because it tells viewers exactly how to read a reveal, outfit, transformation or impressive stunt without any extra explanation or dialogue needed from the creator.