Lyric discussion by midnightzone 

Cover art for Spitting Image lyrics by Freelance Whales

I think it's either about sex or drawing. the chorus definitely sounds like sex. The rest of the song seems unrelated though.You could argue that "circulation thermohaline" talks about increased heart-rate but that's about it. Drawing, "I watched you flare up from the ink", a person drawing and seeing their creation come to life. "our bodies keep on lifting off the sheets our hands get tied to our minds" Sheets of paper maybe? Our hands (which we use to draw) are definitely tied to our minds when we draw. "Big plans" could be to be a famous artist or make money off of your art, or even just you should forget your big plans and just doodle to your hearts content because it's the simple things in life that are important (haha). Or I'm just getting meaning out of nothing and it's completely non related, which for a while I thought it was. Or it's something totally different.

My Interpretation