Well here's how it went, at least the really weird part. It's Grown Ups 3, and the tan chick from Parks and Rec was added to the cast. She's feeling really down and hates her body. Adam Sandler's character sees this, and when she's the bathroom/changing area he puts on a g-string and begins waddling around while crouched with his legs spread apart. I should note that this g-string only covers his penis, and everything else is hanging out and/or visible. He begins slapping his balls around and shaking them, and will then spread his asscheeks and showing off his butthole. He repeats this multiple times. She is then cheered up a little and puts on a slim white bikini and does the same thing. Not a troll-thread; I really did have this dream and I'm legitimately questioning what I eat before bed.