Literally, a blatant, presumably intentional misspelling of the improperly plural adverb form of cool, coolly.
1.
Like being cool, only more so.
2. Used as adj.; cool, only more so.
3. n. An oriental ethnic group; reknown in the western U.S. for working in near-slavery conditions to do the
hard part of building the first trans-continental railroad.
4. n. An offensive racial, (see race), slur against oriental
people.