Bob from Mount Airy, North Carolina, says that while growing up in Michigan, he and others said Brr! in cold weather. But where he lives now, he often hears people exclaim Oosh! As noted in Gratitude for Shoes: Growing up Poor in the Smokies...
The Blind Tiger was a speakeasy during prohibition, perhaps so named because patrons would hand over money to peek at a fictitious blind animal, but also receive illegal booze as part of the bargain. The terms blind tiger and blind pig eventually...