Vintage "I Lost My Ass in Las Vegas" Mug Travel Souvenir

This is a vintage travel souvenir mug or cup from Las Vegas, Nevada. It is ceramic, white with a donkey on one side with phrase "I Lost My Ass in Las Vegas". I'm not sure about the maker, made in China, 1980's-90's (?). Excellent pre-owned condition. No cracks or chips, miner wear, marks, and scratches, and miner manufacturer imperfections. 3 3/4" tall, 3 1/4" top, 3 1/8" bottom 12 oz. *Please see pics and ask for addition details!