npl. the act of giving props (see) to one's friend as a farewell bid, when the two parties involved have distanced themselves too far apart from one another to make a legitimate fist-tap. Usually only performed as a make-up act in the wake of one of the parties forgetting to give the other props prior to beginning departure.
Jim: Aight guys, I'm out, peace. (begins to walk away without giving props to anyone)
Crew: Eh yo homie not even gon give us props!? Wutevs man, (raising their fists in the air along with Jim) air props STILL!