An unfucky person is one that you see as completely unfuckable. In other words, you could never imagine yourself having sexual relations with them. It is an adjective to describe an individuals 'fuckability'.
"Hey Tommy, don't you reckon that Emma chick is unfucky?" said Sanjay.
"Nah not really, I think she has a chance." Tommy responded.
A Lucky Strike cigarette that has been turned upside-down and stored. Although this would bring luck were it any other cigarette, a Lucky Strike is naturally lucky, thus turning it upside down actually counteracts the luck.
- Whoa man, don't flip that one - you want an Unlucky Strike?
- I heard of this one guy who flipped a Lucky Strike, two minutes later a tree fell on him, then he got struck by lightning, then his wife divorced him.