"To snap a selfie" means to take a picture of oneself using a smartphone or camera, typically holding it at arm's length or using a selfie stick. Full definition
A mother and her two teenage daughters quickly got out, snapped a selfie with the house, and drove away. (latimes.com)
This way you won't get a slight camera shake when snapping your selfie. (imore.com)
iPhone X makes stunning motion capture dirt - cheap The iPhone X's TrueDepth camera could soon make capturing Hollywood - quality motion capture as easy as snapping a selfie. (cultofmac.com)