Leek > noun a plant related to the onion, with flat overlapping leaves forming an elongated cylindrical bulb which together with the leaf bases is eaten as a vegetable. It is used as a Welsh national emblem.
The following is a proof of the non-existence of God based on the existence of the leek:
What is the point of the leek? It tastes a bit like an onion, but it's not as nice. It looks more like a big spring onion, but without that delightful freshness. In fact, I would go so far as to say tat the leek is an entirely pointless vegetable. Now (and this is the clever bit), let us suppose that there is a God. He's omnipotent, He's omniscient, He is the big cheese. He creates all things to have a purpose, you have a purpose, I have a purpose, even that fly that buzzes around you when you're trying to get to sleep has a purpose (in case you didn't know, it's to test you). However the leek does not have a purpose, no matter how hard you look.
'Aha!' I hear you cry, 'You have made a fatal mistake' you say 'you have forgotten leek ad potato soup, you silly ass.' Well, I take your point. Leek and potato soup is a Good Thing, but ask yourselves this: would The Lord, Our God really bat an eyelid just to provide an extra option on the lunch menu? No, of course he wouldn't. Clearly then, if there were a God, there would be no leek. But there is a leek, therefore there is no God. QED.