Can be used as noun or as an adjective. Mostly, it is like the german word "geil" (awesome) but with a bit more weird and unclear, yet stronger meaning. Also the base of the entire Galez Movement, a cult for bored geeks surrounding strange ideas, texts and pictures about (seemingly?) sonsense material.
"The weather was absolutely galez!"
"Make Galez, not war(ez)!"
"Galez is meant to be free!"
"Have you seen today's Galez Guy of the Day (GGotD)?"