I call Zhenaniganz

The action of declaring "shenanigans."

Once a person calls shenanigans, he or she has temporary complete control over the surrounding events, objects, actions, and laws of physics.
-Preemptive shenanigans-
Person A: "I call shenanigans!"
Person B: "Aw man!"

-Rebuttle shenanigans-
Person B: "I win our bet, pay up."
Person A: "I call shenanigans!"
Personn B: "Dang."

-Urban Dictionary-