Hella Dope Slang Definition Funny T-Shirt Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester Imported Machine wash cold with like colors, dry low heat Hella dope definition tee. Slang for very; extremely. When used as an adjective: Great in number, measure or degree. A cool t-shirt for those who enjoy cheesy humor and corny jokes. Makes a great gift idea for Californians or anyone that loves in the California Bay area. Lightweight, Classic fit, Double-needle sleeve and bottom hem