In the
Prose Edda (
ch. 35), the
Norse trickster god
Loki made a bet with the dwarf
Brokkr in which he wagered his head. Loki lost; when the dwarf came to collect it, Loki stated that he would relinquish his head, but noted that Brokkr was not entitled to any part of Loki's neck. After a discussion on the matter, while parts of Loki clearly belonged to the head
or the neck, neither side could agree exactly where one ended and the other began. Loki therefore kept his head indefinitely, though afterwards his lips were stitched shut by Brokkr as punishment for using tricky wordplay. ==In argumentation theory==