ploppingのようなどんな単語でも探してください。
 
1.
The single most positive affirmation between friends, colleagues, what have you. Said affirmation carries more weight than even those of normal knucks, secret hand shakes, high fives, etc. An Upknuck is preformed when two, or more, people bump fists with metacarpals facing toward other participant and phalanges facing up towards the sky. "Turn that pound upside down."

Rules to Upknuck:
1. You don't deny an Upknuck at any point one is offered. Said denial of Upknuck can result in said Upknucker refusing any further Upknuck related offers to said Upknuckee with Upknucker being completely justified.
2. You don't blow up an Upknuck. Ever.
Dude 1: "Just got a rim job from Sally!"
Bro 2: "Upknucks, brooooo!"
BradJacobGroseによって 2010年09月06日(月)
 
2.
similar to knuckles, but this action is with the knuckles facing up.. or (upside down kuckles)
upknucks brooo
j_wallsによって 2010年07月29日(木)