After a pun like that, I need some cold duck.

I hate to inject a little old fartdom to Fark cred, but that pun appears in this month's Reader's Digest in the jokes section.

Either someone at Fark is reading that old fogey rag (like me), or they come from a single recent source.

Hard to trace these things nowadays with any degree of accuracy, I suspect.

Then there was the night when Leno and Letterman told basically the same joke. No collusion, no leaks: it just seemed kinda obvious. (Slight variations on this theme: "Today marks the beginning of National Condom Week. Now there's a parade you don't want to miss.")