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Vertical blade play on pocket-knives.
Yo, this M-Tech knife I picked up from Wal-Mart has crazy lock rock.
Lock rock by Ethel Mertz October 21, 2020
By making the "rock" (see: rawk) hand signal, and screaming out "ROCK LOCK!!!111!!!!", one intertwines the opposite fingers and binds them with the other really fuckin' cool person's hand.
"ROCK LOCK!!!!111!!!!!11!"

It is the time for rock.
Rock Lock by Fagbot and jessor December 27, 2003
Handshake style greeting used by rockers. Also used to replace the high five as a rockin' alternative.

See step-by-step pictures: http://www.clubber-lang.co.uk/5.html
rock lock by Jennifer Nash November 6, 2008

Triple Lock-Knot Double Back Rocket 

This knot was discovered in the Lawn Care industry of western Pennsylvania for securing equipment on a trailer. The knot is comprised of three inter-locking loops to tighten the slack out of the line and two slip knots (know as the double back rocket) securing the locked loops. This is a very secure, but easy knot to untie when access to the secured object is needed frequently.
We have a long ride from Moon to the Rochester Beaver run, you better tie the Triple Lock-Knot Double Back Rocket to secure the walk behinds.