It’s from an old FM Concepts VHS video. I can’t remember which one, but I do remember she wasn’t very ticklish. I doubt that video was ever digitized so there’s probably no corresponding on-line clip, but you may want to send your query to a contact at www.fmconcepts.com for a positive ID. Once you know the exact title, you may be able to pick it up on some ebay type site.
It is an early FM, probably with a ID number under 100, back when they were only doing foot tickling. All of that stuff has been out of print for a while, but FM might have started to digitize it, so it won't hurt to ask them.
That's Hannah Turner getting tickled by Daisy Jackson. You can buy the clip at fmconcepts.us. Typical FMC fluff: beautiful but not very ticklish models.