lipids

Simon is reading Science magazine over breakfast. He comes to a graphic showing something relating to nerve endings and lipids. Jay explains that this is explaining something going on in the body.

Simon: "so there are lipids under our skin?"
Jay: "yes"
Simon: "Bapa said there was sugar and water and blood. I guess he doesn't know about lipids."
Jay:
Simon: "we should call and tell him."
Me: "well we can't call him now, he's in London."
Simon: "aren't there phones in London?"