i feel so stupid.
There is a TV show on Fox called Bones that comes on before House that stars the guy from Angel. They examine murder scenes, tonight's episode some soccer mom got blown up in her minivan. A part of her leg was in a tree and her fat was burnt into the seats, good stuff. Didn't watch the show much since I have to write a paper.
Lucifer was referring to Odeon's blood bone specifically. You are just having an off day, pretty sure you would recognize the word boner usually.