Dragon backing
When you hitting it from behind and you want to spice things up so you put a chilli in her mouth and try to keep on top of the dragon's back as she breathes fire.
Guy 1: bro, me and Ria where dragon backing last night.
Guy 2: ahhh bro how was it
Guy 1: proper spicy.
Guy 2: ahhh bro how was it
Guy 1: proper spicy.
Dragon on my back
Having a drug addiction; most commonly used to refer to a heroin addiction.
I wish I could get clean, but I've got a dragon on my back.