look up any word, like cunt:
 
1.
adj. A good way to describe quiche.

It is also good to describe other pleasurable things this way.
A: 'How's the quiche?'
B: 'That's mighty fine quiche'

Tom had had himself such a mighty fine bit of pie he eagerly awaited second helpings.
by Jamie Douglas November 16, 2006
 
2.
When something looks either very nice or possibly even smoking hot, depending on who says it.
Because you don't want your dad to tell you you look 'mighty fine' in the 'smoking hot'-way.
Well I can see you, and you look mighty fine, but you can make yourself look even better.
by Mme. March 25, 2008