A fork of Rural Dictionary
When you perform some act that turns a previously-told lie into a truth.
A lies to B about going skiing in order to avoid going to a boring event. Later, A decides skiing sounds like a great idea after all, and does it, hence unlying about skiing.
An ancient Norse word literally translating as "By the grayest hairs of Odin's mighty beard it shall not come be."
Effectively meaning there is very little chance of occurrence.
If I was wrong I would be unliely to admit it.