With celebrities dropping like John Mayer's pants at a sorority mixer, there's one thing we could all use today. And that one thing is video of a ridiculously pretty lady, totally naked but artfully hiding most of her nakedness with an Egyptian cotton sheet, writhing around on a bed while soft, romantic music plays. Doesn't that sound nice? Maybe not as nice as if she lost the sheet, but we'll take it. So enjoy this video of supermodel Bar Refaeli's nude ass. We don't know why she's being filmed naked, but we like it. If this is how Bar celebrates a break-up, then we hope George Clooney swoops in and snatches her up. For about a week.