To clack is to take ones penis and move it in a rapid, horizontal, back and forth motion. It is also seen as a sign of reverence or an action to pay tribute to someone/something else.
It’s referring too a wood or a blunt wen it comes too you smokin with your friends or by yourself.
Yooooo brother this iss clackinnnnn!! Who rolled thisss
Ommz this shii clack
it's the flow, it's the conversation, it's the jokes are hitting, everyone's in a perfect circle - back and forth, no one is the star, no one is supporting, everyone's supporting each other. it's clack clack clack
"the party is clacking"
"the party is not clacking"
"i'm clacking with my frens"
"the party was the clack"
The act of sweeping ones nuts across a friend or enemies keyboard
Guy1: dude i just saw joe nut clacking your brother
Guy2: you sick fuck thats not cool