premise: Sleipnir is a fish.
hypothesis: A fish hook or fishhook is a device for catching fish either by impaling them in the mouth or , more rarely , by snagging the body of the fish . In Norse mythology , Sleipnir ( Old Norse `` slippy '' or `` the slipper '' ) is an eight-legged horse . In both sources , Sleipnir is Odin 's steed , is the child of Loki and Svaðilfari , is described as the best of all horses , and is sometimes ridden to the location of Hel .