A quick study American singular noun
Used to describle a person who has the ability to learn new things quickly
This student is a quick study because he could catch up with his classmates only after a few weeks.
This student can solve difficult math problems after listening to the lecture once. She is a quick study.
Your son is making great progress in his chess lessons. He's really a quick study.
The origin of this expression is not clear.
Come out of a difficult situation without a stain on one's character
I don't understand how he can fall in shit and come out smelling like a rose.