(someone) could sell ice to Eskimos phrase informal
Someone is such a smooth or convincing salesperson that they can sell things to people who don't need or use it.
The salesman was a real fast talker, and somehow managed to convince me to buy an extra car. He could sell ice to Eskimos.
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.