Something good. porno is porn in norwegian.
but also a very sweet term for ¨good¨
if somethings good you can just say, wow thats porno and not- thats good.
Jan Åge: wow look at that skater he`s damn good!
Karl Petter: naha he aint good, he`s porno!
Jan Åge: what? porno? aint that porn?
Karl Petter: yeah but porn is good and then the skater is porno ;)