Last night, South African freak rap combo Die Antwoord took their current single "I Fink U Freeky" to The Late Show With David Letterman. It was considerably tame, given what we've seen from the group previously, but Yolandi did wear her big, sinister black contacts, for what it's worth. Watch it below. [videoembed size="full_width" alignment="center"][/videoembed] Ten$ion is out today on ...