When something bad happens but something good happens as a result.
My flight was cancelled but American Airlines gave me a $500 voucher and rebooked my flight for the same day. That was a fuck of luck.
A masterclass wingman. Every player's four-leaf clover.
Andy: Actually, on night's out I get quite far with Martin around.
Martin: Yeah, we *do good*
Andy: Exactly, you're my fuck luck charm. :D