This has appeared on here before as a GIF and as a series of stills and possibly even in its original TV clip, but I have upgraded it and re-edited it to give a better build up and a more satisfying finish. It's from the 2007 British TV show 'Skins' and features Welsh actress Siwan Morris - 31 at the time.
IMDB details
https://www.imdb.com/title/tt0946638...2_cdt_epp_sm_2