Rats.

Viking knitting is:

a. the long-lost art of fashioning woolen fabric by winding yarn intricately around and between the horns of your helmet
b. one of the lesser-known Monty Python sketches
c. a brief fad, popular during the late 1970s, of crafting little horned sailor figurines using a technique similar to Macramé
d. a large, bearded blond man named Olaf who enjoys making socks for all his friends
e. this, and you can take a class in it at 8th Street Studios in Georgetown.

Some things are better left to the imagination.