The clip is tied to the long running that's what she said joke, a retort used when an ordinary sentence can be heard as innuendo. The phrase was popularised in the 2000s by Michael Scott in the US version of The Office, though it circulated in comedy long before that. Short reaction sounds like this ohohoh version spread through meme pages, group chats and soundboards, where the laugh alone signals the joke without needing the setup. It remains popular because almost any everyday line can trigger it.