Full throttle. Full speed ahead. When a person is hyper, full of energy, and excited about everything.
by caniacattack May 5, 2009

When a person who is currently sandbagging in an activity suddenly decides to give their full skill/effort into it.
The term originates from American football coaches tending to have conservative play calling until a game-changing scenario shows up, by which they "open up their playbooks" (e.g., trick plays) to gain an edge over their opponent.
The term originates from American football coaches tending to have conservative play calling until a game-changing scenario shows up, by which they "open up their playbooks" (e.g., trick plays) to gain an edge over their opponent.
The pro Mario Kart player had to open up the playbook against his amateur friends after finishing no higher than 3rd after every race.
by Original Orangutans November 29, 2023

Did you see that medicine cabinet door open on its own??? Must be that auto opening medicine cabinet phenomenon!
by Perry Menos December 20, 2019

by liquid19 April 21, 2022

by Abby and mp language March 30, 2025

by public2 November 12, 2022

A prison term called out by inmates to indicate the area is free of guards and to proceed with passing contraband or delivering messages. It is also something to call out when someone bends over to indicate a bootyhole is open for business.
"Ay, can I get a yard check? Any 12 out there? -Nah, yard's open man."
"Damn, dropped my soap. -YARD OPEN!"
"Damn, dropped my soap. -YARD OPEN!"
by ThunderBoss September 16, 2021
