Cut off (one's) nose to spite (one'...
Get/give (someone) the third degree
Wet (one's) whistle
Catch (someone's) fancy
Chip of the old block
Clean slate [wipe the slate clean]
Cream of the crop
Diamond in the rough
Do an about-face
Beat a hasty retreat
Drum (someone)/get drummed out of t...
Let the cat out of the bag