The literal meaning is most likely not corresponding with the actual meaning. It sounds more of a rhyme than a literal meaning [like zapatos rojos, pantalones negros, ect.].
edit - Sorry for offering my help. By the way, this answer came from a person who's been speaking Spanish for a little over 4 years. [ Sima's advice column | Ask Sima A Question ]
iloveaar answered Wednesday January 16 2008, 9:14 pm: its just like lets talk about somthing else...and the word butterfly i guess its jut use because it rimes hahaha [ iloveaar's advice column | Ask iloveaar A Question ]
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