It might be a bit TOO specific as it's quite a wide spectrum but I'm looking for scenes where there are parts when the 2 performers are just a bit too far from the camera so as to barely be able to hear the dirty talking. I'll give an example, in Maybe we Could Hang Out for Property Sex with Sophia Leone (RIP) and Tony Rubino, at 31:48 when she's in cowgirl you can hear them talking but you can't QUITE make out what they're saying. I think it's hot cos even though it's porn it feels like it's a more intimate moment, like we're not privy to something we should be, if you know what I mean. I feel like it's more prevalent in scenes where the guy performing is the only guy holding the camera.
https://www.propertysex.com/scene/4354367/maybe-we-could-hang-out