کھسر پھسر

This term is normally used as

 کیا کھسر پھسر ہو رہی ہے۔

and its English will be something like

what kind of whispering is going on here

so if there are two or more people who are talking to each other in very low volume and you feel like there is some kind of evil planning going on here then you ask them what the heck you guys are talking about.