fuzz: I'm also rubbish with names! I recognise a few, but they are the ones that make me laugh, I couldn't tell you anythign about the poster themselves 
The passenger/driver is the only thing I can think of really, because having thought about it, the fatigue isn't in a backseat to the pain. Other problems, like my bladder issues, joint weakness/giving out, mild mild food reactions would be in the back seat (or even sat in the boot regarding the food!
), but the fatigue is major like the pain is, it's just not as major.
Arbitrary: I never thought about that. I've heard it but usually brush it off, but actually, being in pain is tiring. I guess I'm just scared of becoming reliant on pain killers really, I was when I was a teen and when I realised what I was doing to myself I said no more. That and painkillers used to stop the pain but also mask the weakness, and I wasn't very good at realising when my knees were taking too much and they'd give out on me.
I can put up with blood tests really, I grumble and moan about them but I'm usually fine in front of the nurse administering them 
Fuzz: I've just learnt not to talk about it to them really. My Mum makes all the right noises when I do complain to her, but then tells my sisters (and extended family I found out last week) that I'm fine. Though quite frequently I have the following conversation with my sisters:
Sister: You should wear heels.
Me: I can't, it causes unnecessary pain.
Sister: You just need to get used to them.
Me:
Yes, because my knees won't give out when I wear them after 'getting used' to my legs being forced into an uncomfortable and unnatural position.
That conversation gets repetitive in their attempts to girly me up!