Spiders.

I can even trace it back. When I was quite young, the old guy from next door was in my house, and he told me there was a big Spider in his Bathroom. At the time I wasn't too fond of Spiders anyway, but I decided to brave it and take a look. So, I get to the Bathroom, peer over the side of the Bath, and see this huge Spider crawling up the side towards me. I ran back into my house screaming, and I couldn't sleep properly for days.

It didn't help when a few days later I stumbled out of my bedroom half asleep, brushed past a wall, then looked down at my arm to find another huge Spider on my sleeve. Again, I ran screaming pulling my top off as fast as I could.