Australian

if a machine goes like a rocket, it works very well.

'How's the new computer?' 'Great, goes like a rocket.'

• flare up
• flash in the pan
• flat out
• Flattery will get nowhere.
• Flattery will get you nowhere.
• flavor of the month
• flavour of the month
• flesh and blood
• flesh out
• flesh out something
• flex its muscles
• flex muscles
• flex your muscles
• flight of fancy
• flight of fantasy
• flight of imagination
• flip burgers
• flip-flop
• flip lid
• flip out
• flip someone the bird
• flip the bird
• flip your lid
• flirt with
• flirt with something