I'm sure it must be round here somewhere.
We've always had a really good relationship, me and my immune system. Last year we were particularly close - I didn't have a single cold all winter.
This year ... I'm just embarking on the 4th miserable virus of the season.
Have I done something to upset it? I feed it lots of fresh fruit and veg. Maybe it thought I was taking it for granted ... I swear I didn't and I wouldn't.
Maybe it's lost its memory and is wandering round somewhere searching for a way back to me. Or could someone have nicked it, jealous of our special relationship?
If you should happen to stumble across my immune system, please give it this message from me:
I love you. I need you. I can't live without you. Please come back ...