Reese Witherspoon Is Too Busy To Get Down And Dirty

Last night on the Late Show » 11/26/08 11:00am 11/26/08 11:00am, Reese Witherspoon explained to David Letterman that when she was in Paris with her kids, she took her daughter to the Eiffel Tower and the Musée D'Orsay, but her son really wanted to visit the sewer system. Reese claimed she was "very busy working" and couldn't take her son to the sewer,…