I dont know if you checked out the footage I took of Brittany Foxx "poppin". I just wrapped up , and turned in a shoot with one of the biggest booties on this site, and I got her to do the poppin just tas you described complete with hands on the knees butt ass naked...

[ame]http://www.youtube.com/watch?v=sIMTeeJrTZg[/ame]