It doesn't happen too often - but yesterday I was able to ask our eldest does he know what a wiki is. I went on to explain but may have gone a tad too far when I gave as an example the FAI. It didn't wash, as he knows my interest in the great game is about as high up the scale as the slug found in Kerry. (May it stay there!) And then I explained the meaning of the word - Wiki: "quick, quick" in Hawaiian. Cool!
