YouTube-based duo known for comedy sketches and theme song lip-sync videos.
Definition #2 for "smosh"
Smosh is a comedy duo formed by Ian Hecox and Anthony Padilla in 2003. The group grew in popularity after joining YouTube in 2005, where they posted parody music videos. Many of their videos include pop culture and video game references and sketch parodies of such games as Pokémon, Super Mario, The Legend of Zelda and more.