The act of one being taken in a photograph or video-graph while wearing sun glasses, licking another's taint region and shoving one of the Skoosher's thumb up the other's asshole while giving a great big smile.
Jim: Dude guess what!
Jim: You know that Stephanie girl down the street?
Tom: Um, yeah...What about her?
Jim: Me and her just did a skoosha together behind your house!