Yippee Ki-Yay!

Okay, two parties at each other throats. One decides enough and plots deal with the rival with while armed. Yet, just before the action breaks out, one party shouts this phase to let the other know they mean business. OFten followed by another phase, mostly 'mother fucker', the trope had grown to join the ranks of replacement.

Film

 * Alvin and The Chipmunks, Alvin is chased by a guard. When he finds a spotlight to use, Alvin shouts 'Yippee ki-Ya, Mamacita".
 * Made famous by the Die Hard series.

Western Animation

 * In The Loud House episode, "Cereal Offender", Lynn screams the line to market shoppers while Lincoln was doing the grocery.
 * In Big Mouth, Monster Horrensess