I have access to the AOL chat transcript with Heidi Klum. The female moderator asked the question from DBrazen (he's from here I think)
The female moderator then said it was a weird question. Heidi replied, "Who's not ticklish?...And it depends on how you're being tickled." And the male moderator said, "Yeah, and by whom?" Then the female moderator said, "Yeah, and she's married." And the male moderator said, "So only HE can tickle." They didn't let her say another word, but just skipped on to the next question.
I'm not a fan of /F tickling, but just thought I'd do my part to help you guys out since you wanted the info.