Chips can be bad for you ...

... especially if they are a timing chip, and you forget to attach it to your running shoe before heading for the start line :( 
I've just completed the Fred Hughes 10 mile race in St Albans. I found it tough but I made it round and even enjoyed quite a bit of it. However, I won't have an official time because while I was running around the course, my timing chip was inside a brown envelope in my rucksack in the race HQ. What a wally I am!