whoop yo' ass 

An african-american style threat obtained on the account of insubordination often from parent to child (as well as other exchanges). It is not strictly limited to african-americans. Although it is usually just an empty threat used to express reproval, it very well can be followed by a severe beatdown or whoop. The whooping itself can be performed using accessories such as a belt.

O hell no, son, you better not eat that last piece of chicken or im gon' whoop yo' ass!

I heard you dropped outta school and gon' to jail. Thats my boy! But now i heard that you be foolin wid dose white boys! Come here, im gon' whoop yo' ass!

whoop yo' ass by mak2675 August 23, 2007

fo i whoop yo ass 

Before I deliver a severe beating to you

Getch yo ass out my face, fo i whoop yo ass !!!

fo i whoop yo ass by Pizzlej March 21, 2019

whop yo ass 

A threat.

Example:
Person 1: Come here!
Person 2: No!
Person 1: Come here or else I'm going to WHOP YO ASS

person 1: Come here!
person 2: No!
person 1: Come here or imma WHOP YO ASS

whop yo ass by livia_03 October 5, 2015

Whoopyoass 

"Whoopyoass" is a word defining an action, in witch one would "beat" or "repeatedly smack" one's buttocks, in an act of rage or teaching one a lesson.

"boi if you say that again I'm gonna whoopyoass!"

Whoopyoass by Arandomgall August 8, 2020