a word used to express what someone feels, or an addition to a sentence or word. It's often used for fun, to fool people. For example someone's riding along on a bike and then one uses: HAH
Drooling is often involved with it.
The female equivalent of the slang term brah, used colloquially to refer to one's close female chums. 'Hah' is a modified version of the slang term ho in much the same way brah is a modified version of the slang term bro. Although ho typically refers to women in a derogatory sense, 'hah' is meant to convey the same friendly kinship as brah.