Cloud Hunt

Cloud Hunt is a game played by Finn and Jake in the episode Marceline's Closet. Its rules are the same as the game of Hide-and-Seek. The hunt starts off by counting to four... five -four, then reciting the following rhyme. The song may be reffering to a nuclear cloud from the mushroom war.

Lyrics
"Over the mountain the ominous cloud Coming to cover the land in a shroud. Hide in a bushel, a basement, a cave but when cloud comes a huntin' No ones a' saved."  No one's safe! Cloud hunt... gotcha!