by Davar Iran Ardalan

Scott Simon visited Andy Richter at his office in Universal City recently. When the two sat down, Scott asked Andy for his take on why David Letterman told the now controversial joke about Sarah Palin's daughter and Yankee third baseman Alex Rodriguez. If you missed Letterman's monologue, listen to it here:

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And here's Andy's response:

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What do you think? Does the "comedy math" add up? Let us know. And listen to the full conversation between Scott and Andy Richter on Saturday, June 27 on Weekend Edition, or online at NPR.org.