liquid sunshine noun4 •Rain.So it was out and away to the road, place the call, punch a bunch of buttons ("To transfer funds, Press 9") in the liquid sunshine, while adjusting an umbrella to improve reception. — 2008 •(slang) An alcoholic beverage that is particularly smooth and tasty.He left a bad taste in my mind, let me have another good gulp of this liquid sunshine here with my bird's wing. — 1990 •(slang) LSD in liquid form. •A beverage that is fluorescent or irradiated, believed to have medicinal properties."He has found that the rays do not penetrate fluorescent fluids, or liquid sunshine as they are sometimes called. — 1904