How about:
"This occurs when a roll results in a 1 on one die, and a 10 on the other. The action is resolved normally, but the GM is encouraged to to describe the resolution in some odd or extraordinary fashion to add flavor. The character also gains a Fate Point: a Boon point which can be added to the result of another roll which has resulted in a minimum of 1 Boon Point."
This is a kind of recommendation on an alternative way to resolve things too....maybe Fate is basically just a way to power up a Boon?