Lyric discussion by canuckgirl105 

Cover art for Skinny Genes lyrics by Eliza Doolittle

Could the title "Skinny Genes" also be referring to the idea of his image and saying that that's all he's got? Skinny=looks. I think the title just reinforces the physical attraction she feels for this person and how it's all about sex appeal.

"Take off your skinny genes" could be "show me what's underneath all the looks and appearance."