It's a Portmanteau word formed from the combination of Glacial (frozen) and Flary (bright), which refer to anything that looks or feels like bright ice-like crystals.
Person 1: that watch looks bright like crystal dude!
Person2: It's called a Flacial watch.
Tim and his buddies in college thought a guy was whackin' it a lot. They then set up a video camera in his dorm room and discovered that not only was he a chronic masturbator, he also participated in auto-fellaciatic digestion.