What is "peek-a-boo!"

"Peek-a-Boo!" is a song by the American new wave band Devo, written by Mark Mothersbaugh and Gerald Casale. It appears on the album Oh, No! It's Devo. The single features the non-album track, "Find Out" as the B-side, which was also released as a bonus track on the Infinite Zero Archive/ American Recordings CD reissue of the album. "Find Out" was later re-recorded by Devo's bass guitarist Gerald Casale's solo project Jihad Jerry & the Evildoers for the album Mine is Not a Holy War.