Notion created to display respect, congratulations, or props to one's fellow man. This act is done by one person pinching all their fingers together and motioning the wrist in an up and down motion with their fingertips pointing upward, while the other conducting a similar motion on the opposite direction. After this process is repeated a few times, several unique variations are done including but not limited to, "giving some" under the leg, with both hands, giving some into one another's mouths (not to be taken in the negative "dirty" connotation), among others. This display of respect has branched from earlier rituals including, giving a fellow man "mad props" and has traces even as far back as the "high-five." However it's exact origin as well as date of discover is still disputed to this day.
Guy #1: I just got some serious poonany.
Guy #2: Word?
Guy #1: Word, son.
Guy #2: Gimme Some!