Stewart Vamps for Letterman

9/12/2006 1:18 PM PDT
Martha Stewart made a bizarre appearance on "The Late Show with David Letterman" last night -- licking what appeared to be blood from Dave's fingers.

While making sandwiches for a cooking segment, Dave exclaims, "I cut myself" as the camera zooms into his finger, showing something red oozing from his finger. Stewart then takes his finger into her mouth and licks it clean.

Before you start checking for Stewart's reflection in the mirror or wearing crosses around the domestic diva though, it should be noted what kind of sandwiches they were making -- peanut butter and jelly.