Failure is the mother of success
Faint heart never won fair lady
Fair shake of the whip
Finders keepers, losers weepers
Flash as a rat with a gold tooth
Flat out like a lizard drinking
Fly by the seat of one’s pants
Fool me once, shame on you; fool me twice, shame on me
Fools rush in where angels fear to tread
Football’s a game of two halves
Fortune knocks once at every man’s door
From the sublime to the ridiculous