On the bloopers from "8 Simple Rules" John Ritter, R.I.P, gives her a quick tickle on her legs. It's under a table so you can't see anything, but her reaction gives it away.
https://www.youtube.com/ watch?v=6sxl_hnlN_M
@4:16
https://www.youtube.com/ watch?v=6sxl_hnlN_M
@4:16