ass pressed against surface (ledge, counter, chair, etc)

this is a really basic, SFW example of what I'm looking for

http://i.cdn.turner.com/sivault/swimsuit/image/2012/OOJSguuEoIKNOkbwuVmTY.jpg

simple as that, though: a chick's butt, preferably big or very nice, pressed against a hard surface like a ledge, the edge of a counter or table, or on the top of a chair's backing. point is to have her ass cheeks being pressed into by an object. obviously the nicer the ass the better. preferably side view. can also be sitting but so long as her ass is being pushed or indented to one side
 
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