Listen to Splish Splash (From "Diary of a Wimpy Kid: The Long Haul") online. Splish Splash (From "Diary of a Wimpy Kid: The Long Haul") is an English language song and is sung by Countdown Singers. Splish Splash (From "Diary of a Wimpy Kid: The Long Haul"), from the album Wimpy Kid Diary (Music Inspired By The Movie), was released in the year 2017. The duration of the song is 2:13. Download English songs online from JioSaavn.