Jesus feet water is milk mixed with water so that it looks like water that they would of probably washed feet in. if you were to of had coco pops and it made the milk brown and then you mix it with water it would be dirty Jesus feet water as he would of used it to wash his feet.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.