Combo wombo became a memorable gaming catchphrase through competitive Super Smash Bros. commentary, then spread widely through MLG-style montage edits on YouTube. Online, the sound is used as shorthand for a sequence where everything connects perfectly and the reaction should feel oversized. It stayed popular because the phrase is short, funny and instantly readable even outside fighting games. In meme edits, it often appears alongside other MLG staples such as air horn bursts or the broader mlg pwnage style.